The Bearing Buddy prevents wheel bearing failure on boat, snowmobile, ATV, RV and utility trailers. It eliminates bearing repacking and keeps water and dirt out of hubs and bearings. Features stainless steel components, chrome plated barrel and is easy to install.. Makes hubs safely submersible. Easy to install. Stainless steel internal parts and triple chrome plated steel barrel. Model 1980A has a blue ring for indicating lubricant level.