Use: 6000 lb. trailer axles Inner Bearing Cone 25580 x 1 piece, I.D. 1.75'' Inner Bearing Race 25520 x 1 piece, O.D. 3.265'' Outer Bearing Cone 15123 x 1 piece, I.D. 1.25'' Outer Bearing Race 15245 x 1 piece, O.D. 2.441'' Grease Seal 10-36 (22333TB, Spindle D42, 2.250'' x 3.376'') x 1 piece Grease Seal 10-10 (21333TB, Spindle D42, 2.125'' x 3.375'') x 1 piece