10.8V Lithium-ion Cordless Rotary Tool Kit, Includes Tool, 3 Hour Charger, 60 Accessories & Case, Variable Speed 5,000 To 35,000 RPM With The Same Torque & Speed As A Corded Tool, The Battery Holds A Charge 6 Times Longer Than Standard Nickel Cadmium & Will Hold A Charge For 2 Years.