Angle Grinder, Head Type Standard Head, Grip Style Rat Tail, Voltage 18V DC, Wheel Diameter 7 in, 9 in, For Wheel Type Type 27, Brushless Motor Yes, Cordless Tool Kit Contents (1) Bare Tool, Safety Features Adjustable Guard, Anti-Kickback Clutch, Lock-Off Switch, Switch Type Trigger, Lock-Off Switch Yes, Lock-On Switch Yes, Brake Type None, Max. Speed 6,600 RPM, Minimum Speed 6,600 RPM, Accessory Free Tool Change Yes, Spindle Thread Size 5/8 in-11, Guard Adjustment Toolless Adjustable