QA1's adjustable male Rock Ends are rebuildable rod ends that are designed for the hardest of the hard core racers, builders, fabricators and off road powerhouses. QA1's unique bearing insert Rock Ends feature: An unprecedented 44 degrees of misalignment, while most competitive products offer only up to 30 degrees. Made with forged heat treated chromoly steel housings and a 52100 bearing steel ball that is precision ground, heat treated and hard chrome plated. High misalignment stainless steel inserts allow easy changes in bolt dimensions. QA1's exclusive EMB style self-lubricating, self-sealing race is injection molded with a high strength Nylon/PTFE compound. Exceptional wear characteristics for unsurpassed durability, and the bearings are replaceable.