Dexter 12-1/4" x 2.5" 7,200lb & 8,000lb (4 bolt flange) Left hand electric brake. Complete assembly. Forward self-adjusting. Mounts with 4 bolts (not included). » Was redesigned with cast backing plate in May 2000. Fits Dexter 7,200lb axles (with cast backing and 4 bolt flange) & 8,000lb D80N Axles For use with a 12 1/4" inside diameter and 2 1/2" deep drum Shoes are 2 1/2" wide Left hand(driver's side) Complete assembly ready to install