Walk Behind Floor sawing: Engine:Gasoline,Diesel,Electric Blade Size:12",14",16",18", 20" 300mm,350mm,400mm,450mm,500mm Concrete Saw Cutting ... Machine Features: 1. Highed front, lift-up blade guard is designed for easy blade replacement ... AccessoryBlades(355mm/14in, 406mm/16in) Blades(406mm/16in, 457mm/18in) Floor Saw For Concrete And Asphalt Cutting