CAT style center 988F bolt on cutting edge. Through hardened guaranteed against breakage. This is a double beveled cutting edge that is 1.5" thick, 19" wide, and 52.375" in length. It takes 9 - 1.25" grade 9 plow bolts and 9 - 1.25" nuts. The bolt spacing is center of all holes respectfully 3.346". The space length is 2.448" from the center of the first hole and the center of the last hole to the edge of the cutting edge.