Rear end holder 2 protects the rear end of the frame and derailleur when the wheel is removed Comes with adapter for 0.2 inch (5 mm) quick release and adapter for 0.5 inch (12 mm) through axles. Can be used for rear end width 130mm/135mm/142mm by adjusting the thread amount of each adapter. Plastic/Aluminum Alloy 5.1 inches (130 mm) / 5.3 inches (135 mm) / 5.6 inches (142 mm) Ends, 2 Adapters for Quick Release / 0.5 inches (5 mm) Quick Release / 0.5 inches (12 mm) Through Axles Included with Chain Tensioner Included Product Quick Release and Through Axles are not included. Product color and size: The color of the product may look different from the actual product depending on your display settings. Product specifications, logo design, etc. may be subject to change for product improvement. We also cannot answer measurements or personal fit that the manufacturer does not announce. Please be aware of