"This Tow Zone Electric Drum Brake Kit provides forward braking. Inner Bearing Size in. 1 3/4, Fits Electric Brake Item 124996 and 124998, Brake Type Electric, Fits Wheel Size in. 13-15, Fits Axle Capacity lbs. 7,000, Outer Bearing Size in. 1 1/4, Brakes Included qty. 2, Seal Size in. 2.25, Brake Pad Size in. Standard, Brake Lines No, Bolt Circle Pattern in. 5 1/2, Studs qty. 6, Hubs Included Yes, Drum Size in. 12, Dimensions L x W x H in. 12, Stud Size L x W in. 3/8 x 16. Includes two brakes left and right Water-resistant connections Rubber molded plugs for fast, easy installation Drum hubs are assembled with bearings, seal and pre-greased for easy installation Wiring kit includes two 20-ft. dual wire strips with easy plug connectors and five cable ties Brake controller and breakaway kit not included"