Caterpillar style 1/2" x 6" x 7' curved, carbon, 15 hole grader blade; takes 15 of a 5/8" x 2 3/4" (625x275) plow bolts and 15 of a 5/8" (625 hex nut) hex nuts; Use Item # 9W-2299. Quality aftermarket cutting edges for Caterpillar (CAT), JCB, Bobcat,...