A professional quality Pencil Type Micro Air Die Grinder. This die grinder is perfect for final cleaning and polishing of jewelry, dies and for hobby use. Slim, comfortable and light weight, Variable speed throttle control with self closing lever, Free speed: 56,000rpm, Capacity: 1/8", Air pressure: 90psi, Air consumption: 2 CFM, Inlet size: 1/4" NPT, Grinder length: 5 1/4", Hose length: 5 feet, Includes hose protector, nipple and two collet wrenches