Angle Grinder, Head Type Flathead, Grip Style Barrel Grip, Voltage 18V DC, Wheel Diameter 5 in, For Wheel Type Type 27, Brushless Motor No, Cordless Tool Kit Contents (1) Bare Tool, Safety Features Adjustable Guard, Anti-Kickback Clutch, Anti-Restart, Brake, Lock-Off Switch, Switch Type Paddle, Lock-Off Switch Yes, Lock-On Switch No, Brake Type Electronic, Max. Speed 8,000 RPM, Minimum Speed 8,000 RPM, Accessory Free Tool Change Yes, Spindle Thread Size 5/8 in-11