Makita 8443DWDE 18-Volt Ni-MH Cordless Hammer Drill/Driver Powerful 18V (2.6Ah) Ni-MH battery Ergonomic rubberized grip for comfort and control High performance "Makita" motor lasts up to 5 times longer 16 torque settings; delivers up to 400 in.lbs. torque Single sleeve 1/2" keyless chuck with shaft lock for fast and easy one handed bit installation and removal