The Milwaukee 2563-22 M12 FUEL Stubby Impact Wrench Kit is a compact cordless fastening tool built for high-torque automotive and service work. This is a cordless impact wrench designed for tightening and removing bolts in tight spaces. Model 2563-22 includes the 1/2 inch stubby impact wrench, two M12 REDLITHIUM HIGH OUTPUT batteries, an M12 charger, and a contractor bag.

What makes this kit matter is the balance of size and output. Milwaukee rates it at up to 550 ft-lbs of nut-busting torque, 400 ft-lbs of fastening torque, and 0 to 3,000 RPM with up to 3,300 impacts per minute. On the job, that means it has the punch for rusted suspension hardware, lug nuts, and stubborn engine bay fasteners while staying small enough to get where larger impact wrenches start fighting you for room.

The compact body is a big part of the story here. At just 4.9 inches long and 2.2 lbs bare, this impact wrench is built for access. If you spend your day working around wheel wells, under dashboards, inside engine compartments, or anywhere clearance is limited, that shorter head length saves time because you can get onto the fastener directly instead of building out with extra adapters and extensions.

Milwaukee also gave this stubby impact wrench the kind of control features that actually help in real work. The 4-Mode DRIVE CONTROL system lets you choose output speed based on the task, and the auto shut-off mode limits forward torque to no more than 15 ft-lbs for hand-tight applications. That is useful when you are starting fasteners, snugging hardware before final torque with a hand tool, or working on assemblies where overtightening creates more problems than it solves. Bolt removal mode slows the tool once the fastener breaks free, which helps keep nuts and bolts from getting launched across the shop.

For day-to-day usability, Milwaukee added Tri-LED work lights to cut down shadows around the anvil, along with a friction ring anvil for quicker socket changes. The battery isolation system is there to keep the battery connection secure and reduce vibration transmitted into the pack. That may not sound flashy, but on tools that see a lot of repeated impacts, a more secure battery connection matters for durability and consistent performance.

This kit runs on the Milwaukee M12 battery platform, so it fits the same M12 batteries and chargers many automotive techs and installers already own. In the box you get both a HIGH OUTPUT XC5.0 battery and a HIGH OUTPUT CP2.5 battery, which gives you options. The larger pack is the better choice when you want longer runtime and max output, while the compact pack helps keep the tool lighter and easier to maneuver in tighter areas.

The Milwaukee 2563-22 M12 FUEL Stubby Impact Wrench Kit is a smart buy for mechanics, fleet techs, maintenance crews, and serious DIY users who want real impact wrench performance without stepping up to a larger and heavier platform. If your work is mostly in close quarters and you need a 1/2 inch impact wrench that can still deal with stubborn hardware, this is the kind of tool that earns its keep fast.

• Is this a bare tool or a full kit? This is a full kit that includes the impact wrench, two batteries, a charger, and a contractor bag.
• What battery system does it use? It uses the Milwaukee M12 battery platform and is compatible with all M12 batteries and chargers.
• What size sockets does it use? It has a 1/2 inch square anvil with a friction ring, so it is made for standard 1/2 inch impact sockets.
• Does it have smart tracking or ONE-KEY support? No. Milwaukee lists this model as not ONE-KEY enabled.

Milwaukee 2563-22 M12 FUEL Stubby Impact Wrench Kit punches above its size

If you want a compact 1/2 inch impact wrench that can actually handle stubborn hardware, this is one of the easiest kits to recommend.

• Who it's for: Mechanics, service techs, and serious DIY users who spend more time in tight spaces than out in the open.
• Why it stands out: The mix of 550 ft-lbs of nut-busting torque, 4.9 inch length, 4-mode control, and M12 portability makes it far more useful than a lot of "compact" impacts that are really just underpowered.
• Worth knowing: This is still a compact M12 platform tool, so if your work is all heavy truck or industrial structural fastening, you may still want a bigger impact in the truck. For most shop, automotive, and maintenance work though, this one covers a lot of ground.