Ryobi ONE+ 18V Bare Cordless Hammer drill Bare R18SDS-0. The crushing hammer action of the 18V SDS+ Rotary (Pneumatic) Hammer Drill is excellent for drilling through stone & concrete. Backed by an 18V motor with variable speed forward & reverse gives complete control to the user when taking on tough tasks. A non-hammer setting means it can be used to drill into wood & metal too. Four other modes (hammer & rotary drill chisel & chisel alignment) add to the tool's strong diversity.