These are truly an all-terrain bearing with stainless steel balls and casing to provide you with a bearing that can withstand the elements. These have a nylon ball retainer and removable rubber shields for maintenance. The rain will not stop these bearings from rolling but as with all bearings the cleaner you keep them the longer they will roll.
-Highest grade stainless steel balls
-Stainless steel races
-Dual non-contact removable shields
-Highest quality nylon retainers (lighter than metal and impact resistant)
-Prelubed with Hard Luck speed Serum
-Deep groove outer race to withstand impact