Cordless Die Grinder, Voltage 18V DC, Max. Speed 27,000 RPM, Grinder Orientation Straight, Switch Type Slide, Brushless Motor Yes, Cordless Tool Kit Contents (1) Bare Tool, Accessory Free Tool Change No, Collet Guard Type None, Collet Size 1/4 in, For Wheel Dia. 2 in, Speed Ranges 0 to 27,000 RPM, Minimum Speed 27,000 RPM, Number of Speed Settings 1, Lock-Off Switch No, Lock-On Switch Yes, Brake Type Electronic, Anti-Kickback Clutch Type None, Anti-Restart Technology No