For the ultimate in performance rod ends, look no further than QA1's XM Chromoly Steel Series male rod ends. These heavy duty rod ends are commonly used on 4-link and ladder bars for their strength and durability. XM Series rod ends are completely self-sealing and self-lubricating because of their Nylon/PTFE injection molded race that keeps dirt and debris out. Ball 52100 Bearing Steel. Heat Treated. Hard Chrome Plated. Precision Ground. Race Nylon/PTFE. Self-Lubricating. Self-Sealing. Body Chromoly Steel. Heat Treated. Protective Coated for Corrosion Resistance. Exclusive Features Metal to Metal Support for Heavy Shock Loads. Increased Cross-Sectional Thickness for Greater Tensile Strength.