{"product_id":"mirka-polarstar-1-25-in-7-micron-psa-film-finessing-disc-pack-for-spot-repair-sr-301-7a","title":"Mirka Polarstar 1.25-in. 7 Micron PSA Film Finessing Disc Pack for Spot Repair (SR-301-7A)","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\u003eMade for Spot Repair\u003c\/strong\u003e\u003c\/div\u003e\n        \u003cdiv class=\"feature-card\"\u003eBuilt for clear coat spot repair and fine defect removal, this Mirka PSA sanding disc helps you clean up small imperfections without stepping up to a larger, more aggressive abrasive than the job needs.\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\/grit-range.svg\" alt=\"grit-range\" class=\"aplusicon\"\u003e\n        \u003c\/div\u003e\n        \u003cdiv\u003e\u003cstrong\u003eUltra-Fine 7 Micron\u003c\/strong\u003e\u003c\/div\u003e\n        \u003cdiv class=\"feature-card\"\u003eThe 7 micron grading is aimed at finessing work, not heavy stock removal. That matters when you are knocking down dirt nibs or small surface flaws and want to keep rework to a minimum.\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\/material.svg\" alt=\"material\" class=\"aplusicon\"\u003e\n        \u003c\/div\u003e\n        \u003cdiv\u003e\u003cstrong\u003eFilm Disc Durability\u003c\/strong\u003e\u003c\/div\u003e\n        \u003cdiv class=\"feature-card\"\u003eThe Mirka SR-301-7A Polarstar SR PSA Film Finessing Disc uses a film backing for good durability in fine finishing work, and it is suitable for wet sanding when you need a cleaner cut and better surface control.\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\"\u003e\n  \u003csummary\u003e\u003ch2\u003eOverview\u003c\/h2\u003e\u003c\/summary\u003e\n  \u003cdiv class=\"acc-body\" data-product-summary\u003e\n    \u003cp\u003eThe Mirka SR-301-7A Polarstar SR PSA Film Finessing Disc is a fine finishing sanding disc for localized surface correction and refinement work. This is a PSA sanding disc designed for clear coat spot repair and fine defect removal. Model Number: SR-301-7A. If you are working on small paint imperfections, dirt nibs, or other minor surface flaws, this disc is built for that kind of controlled correction rather than broad material removal.\u003c\/p\u003e\n    \u003cp\u003eWhat matters here is the combination of a 7 micron grade, a compact 1.25 inch size, and PSA attachment. In practical use, that means you can target small defects without over-sanding the surrounding area, and the pressure sensitive adhesive backing gives you a secure hold on the right backup pad or sanding interface. For paint correction and finishing work, that smaller format can be a real advantage when you need precision more than coverage.\u003c\/p\u003e\n    \u003cp\u003eMirka's Polarstar line is known for fine surface finishing, and the film-backed construction is a big part of why. Compared with paper-backed abrasives, film discs generally hold up better in delicate finishing applications where consistency matters. That makes this Mirka finishing disc a better fit for users who care about a predictable scratch pattern and want an abrasive that stays usable through detailed touch-up work.\u003c\/p\u003e\n    \u003cp\u003eThis disc is also suitable for wet sanding, which is worth calling out because wet work can help keep the abrasive cutting clean while reducing loading on fine finishing jobs. For automotive refinish work and other surface finishing applications, that can mean a more controlled result and less time chasing out unwanted marks before the next polishing or finishing step.\u003c\/p\u003e\n    \u003cp\u003eBecause this is a PSA film disc, it is best matched with sanding tools, holders, or backup surfaces designed for pressure sensitive adhesive discs in the correct 1.25 inch size. It is not a general-purpose sanding disc for every sander on the shelf. It is a specialty abrasive for detail correction, where the right size, attachment style, and fine grading matter more than raw removal speed.\u003c\/p\u003e\n    \u003cp\u003eThis product makes the most sense for automotive refinish technicians, detail-oriented paint correction users, body shop professionals, and serious finishers handling localized defect repair. If your work involves cleaning up clear coat imperfections and you want a Mirka abrasive built for finesse instead of brute force, this is the kind of specialty disc that earns its keep.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails id=\"product-benefits\" class=\"acc\"\u003e\n  \u003csummary\u003e\u003ch2\u003ePrecision for Small Defects\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\/20260623670_1.jpg\" alt=\"Mirka SR-301-7A Polarstar SR PSA Film Finessing Disc roll for fine finishing and clear coat spot repair in shop sanding applications\" class=\"tnblock-img\"\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"copy\"\u003e\n        \u003cp\u003eThis Mirka PSA sanding disc is built for the kind of finishing work where control matters more than speed. The small diameter and fine grade make it a practical choice for isolated repairs instead of large-area sanding.\u003c\/p\u003e\n        \u003cul\u003e\n          \u003cli\u003e1.25 inch disc size helps focus on small repair areas\u003c\/li\u003e\n          \u003cli\u003e7 micron grade is suited to finessing and defect removal work\u003c\/li\u003e\n          \u003cli\u003eFilm backing is designed for durability in fine finishing applications\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-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\u003eDiameter\u003c\/th\u003e\n        \u003ctd\u003e1.25 in\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003eMicron Grade\u003c\/th\u003e\n        \u003ctd\u003e7 micron\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003eAbrasive Type\u003c\/th\u003e\n        \u003ctd\u003eAluminum Oxide (AO)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBacking Material\u003c\/th\u003e\n        \u003ctd\u003eFilm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003eAttachment Type\u003c\/th\u003e\n        \u003ctd\u003ePSA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003eWet Sanding\u003c\/th\u003e\n        \u003ctd\u003eYes\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003ePrimary Application\u003c\/th\u003e\n        \u003ctd\u003eClear coat spot repair and fine defect removal\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003ePackage Quantity\u003c\/th\u003e\n        \u003ctd\u003e1 pack\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\/size.svg\" alt=\"size\" class=\"icon-sm\"\u003e\n        \u003cdiv\u003e\n          \u003cstrong\u003eDisc Size\u003c\/strong\u003e\n          \u003cdiv class=\"compat-detail\"\u003eFits applications that use 1.25 in sanding discs.\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\/tool-free-change.svg\" alt=\"tool-free-change\" class=\"icon-sm\"\u003e\n        \u003cdiv\u003e\n          \u003cstrong\u003eAttachment Style\u003c\/strong\u003e\n          \u003cdiv class=\"compat-detail\"\u003eDesigned for PSA-backed sanding tools, holders, or backup pads that accept pressure sensitive adhesive discs.\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\"\u003ePaint Correction\u003c\/span\u003e\n      \u003cspan class=\"tag\"\u003eClear Coat Repair\u003c\/span\u003e\n      \u003cspan class=\"tag\"\u003eSpot Sanding\u003c\/span\u003e\n      \u003cspan class=\"tag\"\u003eDefect Removal\u003c\/span\u003e\n      \u003cspan class=\"tag\"\u003eFine Finishing\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=\"icon-lg\"\u003e\n      \u003cp class=\"tip-text\"\u003eFor clear coat nib removal, use just enough pressure to level the defect and let the 7 micron abrasive do the work. Since this disc is suitable for wet sanding, a little water can help keep the surface cleaner and reduce loading during delicate finishing work.\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        No warranty information is provided for this product beyond a listing of no 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 SR-301-7A Polarstar SR PSA Film Finessing Disc for Finish Work That Needs a Light Touch\u003c\/h3\u003e\n    \u003cp\u003eThis is the kind of specialty abrasive you buy when the job calls for finesse, not brute force.\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWho it's for:\u003c\/strong\u003e Body shop techs, paint correction users, and finishers doing small-area clear coat repair or defect cleanup.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWhy it stands out:\u003c\/strong\u003e The 7 micron grade, film backing, and wet-sanding capability make it well suited to precise finishing work where a consistent result matters.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWorth knowing:\u003c\/strong\u003e This is a PSA specialty disc in a 1.25 inch size, so make sure your holder or sanding setup is built for that format before you hit buy.\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 is this disc mainly used for?\u003c\/strong\u003e It is designed for clear coat spot repair, fine defect removal, and detail sanding where a very fine finish is needed.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eCan this Mirka sanding disc be used for wet sanding?\u003c\/strong\u003e Yes. The product data states that it is suitable for wet sanding.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWhat attachment style does it use?\u003c\/strong\u003e It uses PSA, which means pressure sensitive adhesive backing.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWhat size is the disc?\u003c\/strong\u003e The disc diameter is 1.25 inches.\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":53385927360806,"sku":"SR-301-7A","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/20260623670_1.jpg?v=1782171928","url":"https:\/\/www.toolnut.com\/products\/mirka-polarstar-1-25-in-7-micron-psa-film-finessing-disc-pack-for-spot-repair-sr-301-7a","provider":"Tool Nut","version":"1.0","type":"link"}