Angle Air Die Grinder, 21,000 RPM, 0.25 HP, 1/4" Collet, Front Exhaust. As part of an expanded line of long-lasting, economical, general purpose grinders, the 301B delivers a number of beneficial features in one compact package. Right-angle configuration provides easy access to tight spots, so you can grind, break sharp edges, de-burr, port, and polish virtually anywhere!Performance: Powerful motor with precision gearing offers .25 HP at 21,000 RPM. Durable: Ball-bearing construction offers improved balance, reduces vibration, and ensures a longer product life. Strong: Aluminum housing withstands tough operating conditions. Lightweight: Small and sturdy design weighs only 1.02 lbs and provides easy operation and the right angle configuration allows better access to tight spots. Front exhaust: Helps keep work surface clean. Safety: 1/4" collet and a integral self-locking throttle lever that prevents accidental start up. Usage: Use this air die grinder as a handheld power rotary tool die grinding, cutting, polishing and more.