Cordless Angle Grinder, Head Type Standard Head, Grip Style Barrel Grip, Voltage 18V DC, Wheel Diameter 4 1/2 in, For Wheel Type Type 1, Type 1A, Type 27, Type 27A, Type 29, Brushless Motor Yes, Battery Capacity (1) 4.0Ah, Cordless Tool Kit Contents (1) Bare Tool, (1) Batteries, (1) Charger, Safety Features Adjustable Guard, Anti-Restart, Soft Start, Switch Type Slide, Lock-Off Switch No, Lock-On Switch Yes, Brake Type None, Switch Location Side, Max. Speed 11,000 RPM