Weld-on replacement spindle kit. This round bar, tapered trailer axle spindle is made from solid steel, carries a 1,750 pound rating per axle and includes a 4-hole flange for mounting a brake backing plate and a grease zerk for easy bearing lubrication maintenance. The inner bearing surface is 1.376 inch diameter (L68149) and the outer bearing surface is 1.061 inch diameter. (L44649) The seal surface diameter is 1.72 inch (171255TB). The axle's mounting surface is 1-3/4 inch diameter. Includes nut, washer, cotter pin and grease zerk.