Forward Self Adjusting (FSA) 9,000 lb. 10,000 lb. Trailer Backing Plate Trailer Axles Electric Brakes Electric Brake Assembly Features l This electric brake assemblies fit standard 7 bolt mounting flange for 9k lb. to 10k lb. trailer axles. l Forward Self Adjusting (FSA) electric brake assembly keeps the brakes adjusted automatically. l Compatible with most trailer axle manufacturers. l E-coated backing plates resist wear and corrosion l Fits 15" or larger wheels. Specifications Dimension: 12.25 inch x 3.375 inch Axle Capability: 9000 lbs to 10000 lbs Ax Mounting Flange Bolt Pattern: 7 bolt Brake Fit: Left Hand / Driver Side / LH, Right Hand / Passenger Side / RH Product Composition 12 1/4 x 3 3/8" Electric Brake Shoe Set x 1 7 Bolt Mounting Cast Backing Plate x 1 Magnet Lever x 1 Yellow Wire Magnet x 1 Brake Adjuster x 1 Long Spring x 1 Short Spring x 2