Grinder Kit and Grinder Head Type Standard Head Grip Style Straight Voltage 18V DC Wheel Diameter 6 in For Wheel Type Type 27 Brushless Motor Yes Battery Capacity (2) 6.0 Ah Cordless Tool Kit Contents (1) Bare Tool (2) Batteries (1) Charger Safety Features Adjustable Guard Anti-Kickback Clutch Electronic Brake Switch Type Paddle Lock-Off Switch No Lock-On Switch No Brake Type None Max Speed 9 000 RPM Minimum Speed 9 000 RPM Speed Ranges Not Applicable