Trailer Part, Steel Wheels manufacturer / supplier in China, offering Knott 3000lbs Bare Torsion Axle – Maintenance-Free, Hot-DIP Galvanized, 77.583" Mounting Spacing, Knott 2700lbs Torsion Axle – Bare, Maintenance-Free, 69.5" Mounting Spacing, Knott 2700lbs Torsion Axle – Maintenance-Free, 73.94" Mounting Spacing and so on.