Milwaukee® Rotary Hammer, Cordless, Bare Tool/Kit: Bare Tool, Series: M18™ FUEL™, 1-1/8 in Chuck, Keyless/SDS Plus® Chuck, 0 to 4600 bpm Blows per Minute, 3.6 ft-lb Impact Energy, 800 rpm No-Load, 18 V, Li-Ion Battery, Battery Included: No, Plastic Housing Material, D-Handle/Soft Grip Handle, AUTOSTOP™ Control, Yes Reversible, 13.5 in L x 3.4 in W Dimensions