{"product_id":"mirka-aros-b-325-12v-3-in-cordless-random-orbital-sander-5-0ah-kit-with-2-batteries-mus-aros325","title":"Mirka AROS-B 325 12V 3-in. Cordless Random Orbital Sander 5.0Ah Kit with 2 Batteries (MUS-AROS325)","description":"\u003csection data-aplus\u003e\n  \u003cdetails id=\"product-features\" class=\"acc\" open\u003e\n    \u003csummary\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"features\"\u003e\n        \u003cdiv class=\"card\"\u003e\n          \u003cdiv class=\"card-inside\"\u003e\n            \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/sander.svg\" alt=\"sander\" class=\"aplusicon\"\u003e\n          \u003c\/div\u003e\n          \u003cdiv\u003e\u003cstrong\u003eFine Finish Control\u003c\/strong\u003e\u003c\/div\u003e\n          \u003cdiv class=\"feature-card\"\u003eThe 2.5 mm orbit is built for finish work, spot repairs, and small corrections where you want a consistent scratch pattern without getting too aggressive.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"card\"\u003e\n          \u003cdiv class=\"card-inside\"\u003e\n            \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/power-source.svg\" alt=\"power-source\" class=\"aplusicon\"\u003e\n          \u003c\/div\u003e\n          \u003cdiv\u003e\u003cstrong\u003eCordless Mobility\u003c\/strong\u003e\u003c\/div\u003e\n          \u003cdiv class=\"feature-card\"\u003eThis cordless random orbital sander runs on Mirka's 12V battery platform, so you can move around the panel, bench, or work area without dragging a cord behind you.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"card\"\u003e\n          \u003cdiv class=\"card-inside\"\u003e\n            \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/anti-vibration.svg\" alt=\"anti-vibration\" class=\"aplusicon\"\u003e\n          \u003c\/div\u003e\n          \u003cdiv\u003e\u003cstrong\u003eLow-Fatigue Design\u003c\/strong\u003e\u003c\/div\u003e\n          \u003cdiv class=\"feature-card\"\u003eA lightweight, ergonomic body and low-vibration operation help keep the tool comfortable during detail sanding, especially when you're working one-handed or overhead.\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-overview\" class=\"acc\" open\u003e\n    \u003csummary\u003e\u003ch2\u003eOverview\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\" data-product-summary\u003e\n      \u003cp\u003eThe \u003cstrong\u003eMirka AROS-B 325 3 Inch 12V 2.5mm Cordless Sander Kit\u003c\/strong\u003e, model \u003cstrong\u003eMUS-AROS325\u003c\/strong\u003e, is a compact cordless finishing sander built for precision sanding in tight, controlled applications. This is a \u003cstrong\u003ecordless random orbital sander\u003c\/strong\u003e designed for \u003cstrong\u003espot repairs, small surface corrections, detailing, and finishing work\u003c\/strong\u003e. If your work calls for clean, predictable sanding on smaller areas instead of fast stock removal, this is the kind of tool that makes sense.\u003c\/p\u003e\n      \u003cp\u003eThe big story here is control. Mirka pairs a 77 mm, or 3 inch, backing pad with a 2.5 mm orbit, which puts this tool squarely in the fine-finish category. That smaller orbit matters because it helps produce a more refined surface and better consistency when you're blending repairs, working on body lines, or prepping smaller sections for paint or finishing. For automotive refinishing and industrial finishing, that kind of control is usually worth more than brute force.\u003c\/p\u003e\n      \u003cp\u003eBeing cordless changes how you work with a detail sander like this. Instead of managing hose and cord drag around panels, edges, or work stands, the Mirka AROS-B 325 keeps the setup simple and mobile. It runs on Mirka's 12V lithium-ion battery platform and comes as a complete kit with two batteries and a charger, so you can keep one battery in use while the other is charging. That's a practical advantage in repair workflows where short, repeated sanding cycles are common throughout the day.\u003c\/p\u003e\n      \u003cp\u003eMirka also built this tool around comfort. The body is lightweight and ergonomic, and the low-vibration operation helps reduce fatigue when you're doing repeated finish passes or holding the sander in awkward positions. On smaller sanding tools, ergonomics are not just a nice extra. They directly affect how steady you can keep the pad and how consistent your finish looks when you're working on curved panels, corners, and localized defects.\u003c\/p\u003e\n      \u003cp\u003eFor real-world shop use, the sealed construction against dust and water is another detail that matters. Fine sanding dust gets into everything, and finishing environments are rarely perfectly clean. Added protection helps the tool hold up better in wet and dry sanding applications, especially in automotive work where conditions change from prep to correction to final finishing. The brushless 12 VDC motor also fits the job well by supporting professional-grade performance without adding unnecessary bulk.\u003c\/p\u003e\n      \u003cp\u003eThe system side is worth noting too. The Mirka AROS-B 325 is part of Mirka's cordless ecosystem and is described as compatible with Mirka cordless tool batteries. Supplementary product data also notes myMirka app compatibility, which may matter for shops already invested in Mirka's connected tool approach. If you're already running Mirka abrasives and cordless tools, this sander drops into that setup cleanly.\u003c\/p\u003e\n      \u003cp\u003eWho should buy it? This kit makes the most sense for automotive refinish techs, industrial finishers, and detail-focused users who need a small \u003cstrong\u003eorbital sander\u003c\/strong\u003e for precision work, not broad surface leveling. Serious DIY users doing paint correction or detailed finishing can benefit too, but this is a pro-grade tool first. If your daily work involves spot repair sanding, post-paint finishing, or small-area defect correction, the Mirka AROS-B 325 is built for exactly that lane.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-benefits\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eBuilt for Small-Area Finish Work\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"row\"\u003e\n        \u003cdiv class=\"img\"\u003e\n          \u003cimg src=\"https:\/\/cdn.anglera.com\/assets\/74d6ed76-fe0d-4d23-a9db-1f8749ca9ef2\/20260623071_1.jpg\" alt=\"Mirka AROS-B 325 3 Inch 12V 2.5mm Cordless Sander Kit with batteries and charger for precision automotive refinishing and detail sanding work\" class=\"tnblock-img\"\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"copy\"\u003e\n          \u003cp\u003eThis kit is aimed at users who need accuracy and mobility more than raw removal rate. The smaller 3 inch pad and fine 2.5 mm orbit make it a strong fit for repair blending, detail sanding, and finish prep where larger sanders feel clumsy.\u003c\/p\u003e\n          \u003cul\u003e\n            \u003cli\u003e77 mm, or 3 inch, backing pad for controlled sanding on smaller surfaces\u003c\/li\u003e\n            \u003cli\u003e2.5 mm orbit geared toward fine finishing and consistent surface preparation\u003c\/li\u003e\n            \u003cli\u003eIncludes two 5.0Ah batteries and a charger for continuous workflow\u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-whats-included\" class=\"acc\" open\u003e\n    \u003csummary\u003e\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"tnincluded-wrapper\"\u003e\n        \u003cul\u003e\n          \u003cli\u003e(1) Mirka AROS-B 325 77mm 12V Sander with 2.5mm orbit\u003c\/li\u003e\n          \u003cli\u003e(2) Mirka Intelligent Battery BPA 11150 11.1V 5.0Ah batteries\u003c\/li\u003e\n          \u003cli\u003e(1) Battery Charger BCA 108, max 12V, US version\u003c\/li\u003e\n          \u003cli\u003e(1) 2.0 m power cord for BCA 108 charger, US version\u003c\/li\u003e\n          \u003cli\u003e(1) Carton\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-key-specifications\" class=\"acc\" open\u003e\n    \u003csummary\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003ctable class=\"aplusspecs\"\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/diameter.svg\" alt=\"diameter\" class=\"aplusicon\"\u003e Pad Size\u003c\/th\u003e\n          \u003ctd\u003e77 mm (3 in)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/angle.svg\" alt=\"angle\" class=\"aplusicon\"\u003e Orbit Size\u003c\/th\u003e\n          \u003ctd\u003e2.5 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/voltage.svg\" alt=\"voltage\" class=\"aplusicon\"\u003e Voltage (V)\u003c\/th\u003e\n          \u003ctd\u003e12V\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/motor-type.svg\" alt=\"motor-type\" class=\"aplusicon\"\u003e Motor Type\u003c\/th\u003e\n          \u003ctd\u003eBrushless 12 VDC motor\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/battery-capacity.svg\" alt=\"battery-capacity\" class=\"aplusicon\"\u003e Battery Capacity\u003c\/th\u003e\n          \u003ctd\u003e5.0Ah each\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/batteries-included.svg\" alt=\"batteries-included\" class=\"aplusicon\"\u003e Batteries Included\u003c\/th\u003e\n          \u003ctd\u003e2\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/charger-included.svg\" alt=\"charger-included\" class=\"aplusicon\"\u003e Charger Included\u003c\/th\u003e\n          \u003ctd\u003eYes, BCA 108\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/made-in.svg\" alt=\"made-in\" class=\"aplusicon\"\u003e Made In\u003c\/th\u003e\n          \u003ctd\u003eGermany\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-compatibility\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"compat-list\"\u003e\n        \u003cdiv class=\"compat-row\"\u003e\n          \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/voltage.svg\" alt=\"voltage\" class=\"aplusicon\"\u003e\n          \u003cdiv\u003e\n            \u003cstrong\u003eBattery Platform\u003c\/strong\u003e\n            \u003cdiv class=\"compat-detail\"\u003eRuns on Mirka's 12V lithium-ion cordless tool battery platform.\u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"compat-row\"\u003e\n          \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/connectivity.svg\" alt=\"connectivity\" class=\"aplusicon\"\u003e\n          \u003cdiv\u003e\n            \u003cstrong\u003eConnected System\u003c\/strong\u003e\n            \u003cdiv class=\"compat-detail\"\u003eSupplementary product data lists compatibility with the myMirka app.\u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-applications-uses\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eBuilt For\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"tags\"\u003e\n        \u003cspan class=\"tag\"\u003eAutomotive Refinishing\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eIndustrial Finishing\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eSpot Repairs\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eSmall Surface Corrections\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003ePost-Paint Finishing\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eDetail Sanding\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-pro-tips\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003ePro Tip\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"tip-row\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/specs.svg\" alt=\"specs\" class=\"aplusicon\"\u003e\n        \u003cp class=\"tip-text\"\u003eA 2.5 mm orbit is best when the goal is finish quality, not heavy cut. If you're blending a repair or refining a painted surface, let the pad stay flat and keep the passes controlled so you get the benefit of that finer scratch pattern.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-warranty\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eWarranty \u0026amp; Support\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"warranty-row\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/warranty.svg\" alt=\"warranty\" class=\"icon-sm\"\u003e\n        \u003cdiv class=\"warranty-text\"\u003e\n          Supplementary product data lists this item as having no manufacturer's warranty.\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-tool-nut-take\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eTool Nut's Take\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"eyebrow\"\u003eTool Nut's Take\u003c\/div\u003e\n      \u003ch3\u003eMirka AROS-B 325 3 Inch 12V 2.5mm Cordless Sander Kit for Detail Work That Actually Demands Precision\u003c\/h3\u003e\n      \u003cp\u003eThe Mirka AROS-B 325 3 Inch 12V 2.5mm Cordless Sander Kit is a smart buy when finish quality and mobility matter more than aggressive material removal.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWho it's for:\u003c\/strong\u003e Automotive refinish techs, industrial finishers, and detail-focused users doing spot repairs, post-paint sanding, and small-area surface correction.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWhy it stands out:\u003c\/strong\u003e The 3 inch pad, fine 2.5 mm orbit, cordless format, and low-vibration design put this tool right in the sweet spot for precise sanding where a larger sander is overkill.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWorth knowing:\u003c\/strong\u003e This is not the tool you grab for broad stock removal. It's a specialty finish sander, and that's exactly why pros who do detail work tend to appreciate it.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-faqs\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eCommon Questions\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWhat kind of work is this sander best for?\u003c\/strong\u003e It is designed for spot repairs, small surface corrections, detailing, post-paint applications, and other fine finishing tasks.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eIs this a cordless sander?\u003c\/strong\u003e Yes. It runs on Mirka's 12V lithium-ion battery platform.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWhat size pad does it use?\u003c\/strong\u003e It uses a 77 mm, or 3 inch, backing pad.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCan it be used for wet and dry sanding?\u003c\/strong\u003e Supplementary product data states that it is designed for both dry and wet sanding tasks.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e","brand":"Mirka","offers":[{"title":"Default Title","offer_id":53385918218534,"sku":"MUS-AROS325","price":960.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/20260623071_1.jpg?v=1782171892","url":"https:\/\/www.toolnut.com\/products\/mirka-aros-b-325-12v-3-in-cordless-random-orbital-sander-5-0ah-kit-with-2-batteries-mus-aros325","provider":"Tool Nut","version":"1.0","type":"link"}