These are the Left and Right Chain Tensioners for the Venom 1/8 GPV-1 3-Channel RTR Motorcycle (VNRC01**). FEATURES: Nylon construction Black in color INCLUDES: One Left and One Right Tensioner REQUIRES: Installation on the GPV-1 SPECS: Outer Diameter: 10mm (0.39") Inner Diameter: 5.85mm (0.23") Width: 3.9mm (0.15")