AXLE 1500lb. CAPACITY spring suspension- galvanized, 1.5" O.D. square tube, 50.5"" seal surface, 43" spring centers, 49" tube length comes assembled with 4 bolt hub assemblies (part number 46199A). Bearing size is 1" METRIC.  Please verify all measurements on the drawing before ordering to ensure you are ordering the correct axle. If you have any questions in regards to this print please feel free to e-mail us at customerservice@boattrailerpartssuperstore.com. Please note that due to the size and weight of this package additional UPS charges are applied.