●Hot-Dipped Galvanized Hub. This makes it excellent for boat trailers to protect against the harsh saltwater environment. ●Outer bearing 44649-- 1 1/16, Inner bearing 68149-- 1 3/8 ●Seal inside diameter 1.719, Seal outer diameter 1.983 ●Package Including: Brake Drum Hub, Inner bearing, Outer bearing, Seal, Dust Cap, Lug Nuts ●1 year warranty, support replace, return and refund service