Composite 1/4 in. Straight Die GrinderThe AIRCAT 6201 is a composite straight die grinder using superior steel grade internal bearings for longer life. The 6201 has a patented quiet tuned exhaust down to 82 dBA, ergonomically designed housing for comfort, and a feather trigger for better speed control. It has a 1 2 HP motor, runs up to 22,000 RPM, 1 4 in. collet, Rear Exhaust, weighs 1. 1 lbs., 8. 5 in. L, uses 6 CFM, and has a 1 4 in. NPT air inlet. Patented quiet tuned exhaust (82 dBa)