QA1's A Aluminum Series rod ends are Endura rod ends that are designed specifically for performance applications where weight is a concern. With a Nylon/PTFE injection molded race, these rod ends are completely self-sealing and self-lubricating, keeping dirt and debris out. Over 10% lighter than traditional three-piece aluminum rod ends, the A Series rod ends are the most wear-resistant aluminum design available. Ball: 52100 Bearing Steel Heat Treated Hard Chrome Plated Precision Ground Race: Nylon/PTFE Self-Lubricating Self-Sealing Body: Aircraft Aluminum Color Anodized Red as Standard Exclusive Features: Metal to Metal Support for Heavy Shock Loads Increased Cross-Sectional Thickness for Greater Tensile Strength