The Blue Ox BXW4048 TrackPro Hitch Head Kit is a replacement standard hitch head for the TrackPro Weight Distribution Hitches. Compatible with the following TrackPro kits: BXW0650, BXW0850, BXW1050, BXW1350, BXW0851, BXW1051, and BXW1351. Caster in the hitch head provides sway prevention. Powder coat finish aids in rust prevention and prolongs the life of the product.