The 3107G 1/4" Air Straight Die Grinder is the perfect tool for a wide array of grinding tasks. Boasting a compact, ball-bearing construction, this grinder is both robust and lightweight, making it perfect for continuous use. The powerful .33 horsepower motor, paired with a 27,000 rpm free speed, ensures you work more efficiently, tackling finishing, cutting, polishing, porting, light weld grinding, and smoothing sharp edges with ease.