Contents: (1) 6k Trailer Axle - (6,000 lb Beam Only); (1) 6000 lb Trailer Idler Axle TK Service Kit - 6k Capacity(2) k (6000 lb Capacity) Bearing Kit Double Lip Grease Seal-010-036-00 3.376 O.D 2.250 I.D; Outer Race-15245 2.441 O.D; Outer Bearing-15123 1.250 I.D.; Inner Race-25520 3.265 O.D.; Cotter Pin; Inner Bearing-25580 1.750 I.D.; Hub/Dust/Grease Cap; (2) 6k Hub and Drum (3,000lb Capacity Per Hub) 6x5.5; (1) 12"x2" Electric Brake Assembly (Left Hand); (1) 12"x2" Electric Brake Assembly (Right Hand); (1) Tube of High Temp Axle Grease (Grease Brand May Vary); (12) Coned Wheel Nuts; (2) Spindle Nut; (2) Castle Nut; (10) Brake Mounting Nuts; This trailer axle build it yourself kit contains hand picked parts to ensure that you have everything you need to properly build your own service your trailer axle. Features: Hand Picked Parts - We have made it extremely convenient for you by packaging everything you need in one kit; Electric Brake Axle Application - OEM grade replacement axle components; Kit makes swapping out old parts for brand new parts, quick and simple.