The CP3109 Series - pneumatic industrial Straight Die Grinders - meets the intensive needs of grinding, contouring, deburring, and cleaning with carbide burrs, mounted points, abrasive wheels, and flap wheels. It has a 6.35 mm (1/4') or CNOMO capacity collet with a very durable bevel gear and a powerful 0.8 hp (600 W) motor. The range consists of 18 models, straight or straight extended housing collet spindle with 4 free speed options from 15,000 to 28,000 rotations per minute.