Doosan Infracore Portable Power offers seven models of Ingersoll Rand WS-Series walk-behind concrete saws. The WS14, WS14C (pictured), WS16C, WS18 and WS20 models come with a Honda engine ranging from 8 to 20 hp. The WS26D and WS36D are equipped with either a 31- or 57-hp Deutz engine, respectively. The WS14, WS16 and WS18 saws are manually propelled and have a recoil starting system, while the larger models — the WS20, WS26D and WS36D — feature hydrostatic propulsion and an electric-starting system.