Grinder, Head Type Fillet Weld, Grip Style Barrel Grip, Voltage 18V DC, Wheel Diameter 6 in, Brushless Motor No, Cordless Tool Kit Contents (1) Bare Tool, Safety Features Anti-Kickback Clutch, Anti-Restart, Brake, Switch Type Slide, Lock-Off Switch No, Lock-On Switch Yes, Brake Type Electronic, Max. Speed 3,800 RPM, Minimum Speed 3,800 RPM, Accessory Free Tool Change Yes, Spindle Thread Size 5/8 in-11, Anti-Restart Technology Yes, Anti-Kickback Clutch Type Electronic