Features and Benefits: Lightweight and ideal for tight spots; Twist throttle provides variable speed control; Designed for high speed porting and finishing of small parts; Ideal for cleaning of dies, rotors, backing plates, brake pads, mounts plus many other applications; Collet size: 1/8"; free speed: 56,000 rpm; overall length: 5-1/4"; air pressure: 90-100 psi; hose length: 5'.