Angle Grinder, Head Type Standard Head, Grip Style Barrel Grip, Voltage 20V DC, Wheel Diameter 4 1/2 in, For Wheel Type Type 27, Brushless Motor No, Battery Capacity 4.0 Ah, Cordless Tool Kit Contents (1) Bare Tool, Safety Features 3-Position Handle, Dissipates Heat, Switch Type Trigger, Lock-Off Switch Yes, Max. Speed 8,500 RPM, Number of Speed Settings Continuous, Accessory Free Tool Change Yes, Guard Adjustment Toolless Adjustable