Ball: Ball: AISI 52100 bearing Steel, heat treated, HRC56 min; Precision ground, polished hard chromium plated.
Body: Carbon steel, Zinc plated, heat treated, HRC56 min; Precision ground, polished hard chromium plated.
Body: Chromoly steel heat treated, Zinc plated.
Race: Nylon polymer with PTFE additive.
Sliding contact surfaces: Steel/Nylon.