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. The L-shaped design maintains the position of the speedometer in front of the handlebars, providing a comfortable view and safer riding. Adjustable lamp holder with 90° adjustable bolt design for easy adjustment. Specifications: Color: black, red, silver (optional) Material: aluminum alloy Fitment: for bike handlebar of 31.8mm diameter Item size: 128 * 52 * 37mm / 5.0 * 2.0 * 1.5in Item weight: 45g / 1.6ounce Package size: 187 * 80 * 47mm / 7.4 * 3.1 * 1.9in Package weight: 100g / 3.5ounce Packing List: 1 * Extension Rod 2 * Wrench 1 * Adapter 4 * Base 1 * Antiskid Pads 5 * Screws