QA1 A Series rod ends are 10 percent lighter than traditional 3-piece rod ends. They feature metal to metal support for heavy shock loads and increased cross-sectional thickness for greater tensile strength. A self-sealing liner that wont pound out like other styles extends the life of the rod ends as well. So, add some strength and reduce weight at the same time with durable QA1 A Series rod ends. BALL ·52100 Bearing Steel ·Heat Treated ·Hard Chrome Plated ·Precision Ground RACE ·Nylon/PTFE ·Self-Lubricating ·Self-Sealing BODY ·Aircraft Aluminum