Brand: Herschel Parts Fits Allis Chalmers 387 series. 16' Replaces 347750. 4 bolts required. (1) 1/2' x 1-1/2' and (3) 7/16' x 1-3/16'. 3/8' thick. Heat-treated, painted black finish. Made of long wearing, high carbon steel. Sold in cartons of 6 only.