Features: -This product is made of premium aluminum + plastic material. aluminum has high strength and light weight. plastic has nice formability and better installation. -It is suitable for the reinforced connection of the tt handlebar of the tri-bar handlebar, the installation of the computer, and the installation of the camera. it also can install the flashlight lamp holder. -The product adds a locking ring, which extends the practicability of the connector, and the two connection locking rings are suitable for the installation of handlebars of 22.2mm and 25.4mm. -With two computer table bases, it fits for installing a variety of computer tables, and a camera can be installed on the bottom for multiple purposes. use this computer table holder at the same for time increase the strength of the handlebar, so that the handlebar is not easy to shake. -Multifunctional, not only can you place a stopwatch, but you can also hang a camera to the ride. Specifications: Suitable For: 22.2 / 25.4 Handlebar Installation and Use. Weight: 154.9 Grams Packing List: 1 x Computer Base Body 25.4/22.2 Conversion Set x One Set Each Computer Conversion Base x2 Installation Wrench x 2 Computer Conversion for Seat x 3 Color:black/red Aluminum Handlebars Are Usually 22.2mm, Carbon Fiber Handlebars Are Usually 25.4mm Irregular Circumference Push-Pull Telescopic Design, Handlebar Can Be Adjusted Between 70-135mm. Package Includes: 1 pcs Bike Camera Mount. note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!