Built to perform, the 18V Hammer Drill delivers 10% more power than previous models. This drill kit features two 2.4 Ah NiCd batteries for long run-time between charges. Clutch by-pass provides quick shifts between drill, drive, and hammer modes while maintaining clutch position. Patented reversible battery pack allows the drill to fit in tight areas and provides better balance while working overhead. 1/2 in. metal, single-sleeve ratcheting chuck with carbide jaws provides superior grip torque on bits.