DescriptionThis Tow Zone Stainless Steel Disc Brake replaces 10in. Drum for trailers. Order two per axle. U.S.A. Item is on back-order until mid-December. Fits Axle Capacity lbs. 3,500, Rotors Stainless steel, Rotor Size in. 10, Seal Size in. 1 22/32, Brake Type Hydraulic, Stud Size L x W in. 1 x 1/2, Bolt Circle Pattern in. 4.5, Studs qty. 5, Dimensions L x W x H in. 10 x 4 x 9, Calipers Aluminum, Pistons Stainless steel, Brakes Included qty. 1, Brake Pad Size in. Standard, Outer Bearing Size in. 1 1/16, Fits Wheel Size in. 13-15, Inner Bearing Size in. 1 3/8. Aluminum calipers Bronze pistons GalvX steel hub with stainless steel rotor assembly Assembled and pregreased complete with bearings and seals Ready for retrofitting drum brakes or for new installation 5-stud x 4 1/2in. bolt circle 1 3/8in. inner bearing 1 1/16in. outer bearing 1 22/32in. seal