Alloy Steel Rod Ends - B4WM-20-16 1.25" 12 tpi rod ends with 1.0" bore. Great for the budget builder. Housing is made from an Alloy Steel with a bright chrome polished finish. Ball is made from bearing steel and heat treated and hard chrome finished. Race is made from injection molded Nylon . Ultimate Radial Static Load - 50,843 lbs.