Bush Hog® Road Grader Blades fit a wide range of tractors. The Heavy-Duty, CAT I three-point hitch, 4 in. x 4 in. mainframe and double-lug lower hitch points help ensure performance and reliability. Shearing action of the material being worked is provided by two, reversible, high carbon steel cutting edges. One edge mounted inside the box and the other mounted on the back side allow the blade to be operated in forward or reverse. Maximum penetration in hard-packed material is accomplished by the scarifier kit which has a maximum working depth of 3 in.