Finish: plated zinc with a yellow dichromate treatment.Length Determination: the dimensions above show what center-to-center length can be achieved by the rod length shown for the various of linkage end options (ie: ball joints, clevises/yoke ends, spherical rod ends).Material: low carbon steel.Specials: specials are available at any volume.Standards: MCP offers standard threaded rod lengths to provide fast and economical linkage options.