Center piece recommended for following models:
CAS 621B, CAS 721B
CASE style end 621/721 bolt on cutting edge. Through hardened guaranteed against breakage. This is a double beveled cutting edge that is 1.25" thick, 12" wide, and 38.188" in length. It takes 6 - .75" grade 9 plow bolts and 6 - .75" nuts. The bolt spacing is center of all holes respectfully 12.781". The space length is 6.313" from the center of the first hole and the center of the last hole to the edge of the cutting edge.