This is a set of Short Kingpins for the RJ Speed Pro Stock, Funny Car and Dragster kits. FEATURES: Constructed of steel INCLUDES: Two kingpins, two 2.5mm nuts and two 2.5mm lock nuts REQUIRES: Installing at front suspension SPECS: Length of Kingpins: 0.78" (19.8mm) Diameter of Kingpins: 0.12" (3mm) RJ SpeedPart RJS5358