"Portable saw from Northern Industrial is designed to cut concrete, asphalt or both at the same time. Powered by a Honda GX-160 5.5 HP air-cooled engine that operates at 3600 RPM. Rotating handle adjusts cutting depth from 3.9in.-4.7in. Includes built-in 5-gallon water distribution system that supplies water to both sides of blade for cooling. Accepts 12in. and 14in. dia. premium diamond blades not included for a variety of applications. Steel hinged blade guard. Arbor Size in. 1.062, Blade Speed RPM 3,200, Cutting Depth in. 4.7, Engine Displacement cu. in. cc 160, HP 5.5, Speed RPM 3,600. 27mm arbor 1-gallon gas tank Includes 2 spanners and spark plug wrench"