Round Stock - Trailer Axle Spindle With 5-Hole Flange - 1-3/4 Inch to 1-1/4 Inch I.D Bearings 1.749" diameter inner bearing surface - 1.249" diameter outer bearing surface 2" diameter mounting surface - 5-hole flange for mounting brake backing plate 3,000 lb capacity - 1"-14 thread - Seal surface 2.25" (seal included) Inner/outer bearings not included - Nut, washer and cotter pin are included Read product description below for more information