0.25 HP Straight Die Grinder Durable, versatile, and cost-effective, our 307B die grinder are perfect for porting, weld grinding, smoothing edges, de-burring, and polishing. Its compact design offers exceptional maneuverability and accessibility for difficult-to-reach spots. Powerful motor delivers 0.25 HP (0.19 kW) at 28,000 rpm free speed. Durable ball-bearing construction improves balance, reduces vibration, and ensures a longer life. Strong aluminum housing withstands tough operating conditions access to tight spots. Safety-lock throttle lever is easy to use and can prevent accidental start up. Front exhaust helps keep work surface clean. Included with the tool: 1/4 and 6 mm collets and two wrenches 307B