The Northern Industrial walk-behind concrete saw uses a powerful 9 HP Robin engine and cuts concrete up to 4.3in. HP: 9, Cutting Depth (in.): 4 3/4, Bar Length (in.): 14 Powerful 9 HP Robin engine cuts concrete up to 4.3in. Accepts 14in. blades with a 1in. arbor (not included) Includes water hose hookup for easy blade cooling; line marker and adjustable height setting