4-1/2", 11A, Grinder Kit, AC/DC, 11,000 RPM Motor With Overload Protection, 5/8"-11" Spindle, Paddle Switch, Jam Pot Low Profile Gear Case, Quick Change Wheel Release, Keyless Adjustable Guard, Dust Ejection System Keeps Debris From Entering Air Intake, 1 Piece Brush Arm, Vibration Reducing Side Handle, Auto Off Brushes, Spindle Lock, Slim Body Design, Includes: Handle, Depressed Center Wheel, Wrench, Manual & Kit Box.