Hummer drill KH-ED-015 Rated Voltage:110-220V~ ... - 3900r/minConcrete:16mmSteel:16mmWood:30mmpcsour company line in electric drill, impacy drill, jig saw, angle grinder, marble cutter, chain saw ... , electric vibrator, electric hand-mixer, electric blower, cut-off machine, electric power ... me, and warm welcome to your trial order. 13mm Hummer drill