This product can be installed on the the handlebar and used as an extension bracket to allows you to install electronic devices such as bicycle light, camera, and mileometer on the front of the bicycle. Features: Widely applicable, can install various type of cyclecomputer, cycling light, camera, etc. Aluminum alloy material, lightweight, more sturdy, and less prone to breakage. Easy to install, the position of the cyclecomputer is more convenient to view, and cycling is more convenient and safer. Adjustable lamp holder with 180 adjustable bolt design for easy adjustment. Installed under the handlebar, saving space and not hindering cycling. Specifications: Color: black Material: aluminum alloy Item size: 150 * 34mm / 5.9 * 1.3in Item weight: 45g / 1.6ounce Package size: 120 * 100 * 30mm / 4.7 * 3.9 * 1.2in Package weight: 75g / 2.6ounce Packing List: 1 * Extension Rod 4 * Base 1 * Rubber Belt 2 * Screws 2 * Wrench