These aftermarket replacement axles are compatible with John Deere hay cutting equipment (model 285) and Kuhn hay cutters (GMD800). They are substitutes for OEM parts number AE73700 (John Deere) and 83101792 (Kuhn). Size: 5/8 inch diameter x 118.06 inches length. Set of 4 axles. Use for hay harvesting equipment, primarily for cutting and processing hay. Please verify your equipment compatibility before purchasing.