Pneumatic 11" long neck extended shaft 1/4" and 1/8" air die grinder operations at 17000 rpm. This extended shaft air die grinder has an interchangeable 14/" and 1/8" collet adapters and can reach deep depth and hard to reach area for tasks. Free Speed:17000 rpm. Optional Muffler MSA-006A. Purchase Separately. Safety Level For Easy Speed Control.Safety lever throttle with positive grip provides easy tool and speed control. Rear Exhaust Extensive shaft straight die grinders us..