Bearing Buddy Stainless Steel Bearing Protectors (2.328" Diameter) With Bras - Pair 2.328 inch diameter (Approx. 2-5/16") Prevents wheel bearing failure on boat, snowmobile, ATV, horse, RV and utility trailers Stainless steel construction inside and out - Grease level easily checked Keeps water and dirt out of hubs and bearings - Eliminates bearing repacking Please see measurement instructions (secondary picture) to confirm correct sizing.