Bearing Buddy (43104) Stainless Steel Bearing Protectors (pair) - 2.328" Diameter 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 Keeps water and dirt out of hubs and bearings Please see measurement instructions (secondary picture) to confirm correct sizing.