This bike computer mount is adjustable to provide you convenient viewing angles. It comes with 4 adapters to work with different bike computers. Specifications: Material: Aluminum alloy + Plastic Size: 36 * 37mm / 1.4 * 1.4in Weight: 34g / 1.2oz Package List: 1 * Computer Mount Base 4 * Computer Adapter 1 * Hex Screw (M6*35mm) 1 * Hex Screw (M5*17mm) 1 * Hex Screw (M3*3mm) 1 * Washer