This is the Red Aluminum 4mm/5mm Universal Turnbuckle Tool from ST Racing. FEATURES: Red in color Light weight CNC machined wrench Exact fit over 4mm turnbuckle adjustment nut (like ones found on Traxxas Slash, Rustler, Bandit and Stampede) Exact fit over 5mm turnbuckle adjustment nut (like ones found on T-Maxx, E-Maxx and Revo) INCLUDES: One Red Aluminum 4mm/5mm Universal Turnbuckle Tool tlc 10/10/12