Hardened Chrome Plated Steel Hinge-Pin, for Slash / RustlerHot Racing Hardened Centerless Grind Steel Hinge pin Kit for the Electric TRA 2WD Slash, Rustler, Stampede. Includes: Two 52mm hinge pins Two 48mm hinge pins Two 35mm hinge pins Two 29mm hinge pins Six M3 lock nuts Two M2. 5 Lock Nuts Features: Hot Racing Chrome Plated Steel Lock Nut Style Hinge Pin Kit once and for all. Centerless Grinding Machined from high quality #45 carbon steel, that is then heat treated for increase in durability, and then