Makita HR004GZ 40V SDS Hammer Drill Body Only, features 2.9J impact energy, SDS plus shank, optimum drilling range 4 - 16 mm, max drilling: 28mm in concrete, 13mm in steel, 32mm in wood, 54mm TCT core, 65mm Diamond core. Brushless motor Electric brake Variable speed control by trigger Constant speed control Forward / reverse rotation LED job light 3x Operating modes (RO/RH/HO) Torque limiter "Soft no load" function automatically reduces the motor speed during idling to suppress the vibration of the machine body. Anti vibration technology Supplied with Quick Change Chuck