Trailer Part, Steel Wheels manufacturer / supplier in China, offering CE Smith Galvanized Trailer leaf spring Axle With Idler Hubs - 5 on 4-1/2 - 57-1/2" Long - 1.8K, 5,200 lbs Trailer leaf spring Axle With Electric Brakes - Easy Grease - 6 on 5-1/2 Bolt Pattern - 89" Hub Face 74" Spring Center, 7,000 lbs Trailer leaf spring Axle with Electric Brakes - Easy Grease - 8 on 6-1/2 Bolt Pattern - 95" Hub Face 80" Spring Center and so on.