Angle Grinder Head Type Standard Head Grip Style Barrel Grip Voltage 18V DC Wheel Diameter 4 1/2 in 5 in Brushless Motor Yes Cordless Tool Kit Contents (1) Bare Tool Safety Features Adjustable Guard Anti-Restart Brake Lock-Off Switch Switch Type Paddle Lock-Off Switch Yes Lock-On Switch No Brake Type Electronic Max Speed 8 500 RPM Minimum Speed 8 500 RPM Spindle Thread Size 5/8 in-11 Guard Adjustment Toolless Adjustable Anti-Restart Technology Yes