Die Grinder Kit, Duty Light Duty, Horsepower 0.4 hp, Collet Size 1/4 in, Grinder Orientation Angle, Air Inlet Connection Size 1/4 in, Air Inlet Gender Female, Max. Speed 18,000 RPM, Air Inlet Type NPT, Air Inlet 1/4 in NPT Female, Tool Style Right Angle, Kit Contents (1) Bare Tool, (5) Abrasive Wheels, Includes (2) Collet Wrenches, Case Included No, Material Application Steel, Wood, Anti-Restart Technology Yes, Anti-Kickback Clutch Type None, Power Source Air Powered WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Nickel (Metallic)