Walk-Behind Concrete Saw Power Source Gas Powered Series FS 309 Primary Saw Application Asphalt Concrete Tool Style Walk-Behind Blade Dia 14 in Max Blade Speed 3 500 RPM Horsepower 8.5 Arbor Size 1 in Arbor Shape Round Cutting Type Wet Max Cutting Depth 4 5/8 in Variable Speed Yes Tool Weight 117 lb Fuel Type Gasoline Engine Type Four Stroke Engine Brand Robin EX27X Start Type Pull-Cord (Recoil) Includes Wrench