QA1 SLB Endura series spherical bearings offer metal-to-metal support for heavy shock loads. These SLB Endura bearings provide the ultimate in performance. They are self-sealing and self-lubricating with their PTFE/KEVLAR liner inside of the heat-treated, stainless steel race that keeps dirt and debris out. QA1 spherical bearings also provide smooth operation for low and moderate loads with their precision-ground steel balls. The bearing steel is heat-treated and hard chrome plated. Give your hot rod or race car the quality and affordability of QA1 SLB Endura series spherical bearings.