3.5K 10 X 2 1/4 RH Electric Self Adjusting Brakes; Std Wire (Green), used on the trailers ... Backing Plate 5. Use For USA TrailerWe can supply the electric brake assembly 7", 10", 12" and 12 1/4" with ... so as to meet the special requirements of customers. 10" Electric Self Adjusting Brakes, Right hand