Bearing Buddy Bearing Protectors Model 1980A Visual lubricant level indicator inside the hub. Prevents wheel bearing failure on boat, snowmobile, ATV, horse, RV and utility trailers. Eliminates bearing repacking. Keeps water and dirt out of hubs and bearings. Grease level easily checked. Stainless steel components. Proven in use for over 35 years. Easy to install.

Outer bearing cone: L44643, L44640 Outer bearing cup: L44610 Bearing diameter: 1.980"