AF Aluminum Series rod ends from QA1 are female Endura Series rod ends that are designed specifically to save weight on performance applications. They feature a Nylon/PTFE injection molded race and are completely self-sealing and self-lubricating, keeping dirt and debris out. The AF Series rod ends are over 10% lighter than traditional three-piece aluminum rod ends and 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.