Cordless Polisher, Voltage 20 V, Spindle Thread Size 5 in, Battery Capacity 5.0 Ah, Includes 5 in Backing Plate, Torx Key, Kit Bag, Switch Type Variable Speed Trigger, Battery Model Number (2) 31AC52, 31AC52, Charger Model Number 11A157, Features Brushless Motor, Variable Speed, Rubber Gear Case Overmold