Angle Grinder Head Type Flathead Grip Style Straight Voltage 18V DC Wheel Diameter 4 1/2 in 5 in For Wheel Type Type 1 Type 27 Brushless Motor Yes Cordless Tool Kit Contents (1) Bare Tool Safety Features Adjustable Guard Anti-Kickback Clutch Brake Switch Type Slide Lock-Off Switch No Lock-On Switch Yes Brake Type Electronic Switch Location Top Max Speed 8 500 RPM Minimum Speed 8 500 RPM Speed Ranges 0 to 8 500 RPM Number of Speed Settings Continuous