This product is made of aluminum alloy and plastic. It can hold different models of computers and is equipped with camera stand. To ensure your riding safety to extent, it is easy to install and can be operated by yourself. Features -Color: Black -Material: Aluminum Alloy, Plastic -Size: 14.40X3.80X0.60cm/5.66X1.49X0.24in -Packing Size: 16.00X8.00X3.00cm/6.29X3.14X1.18in -It is easy to install, it is not easy to fall off after installation, and it can be applied to the handlebars of bicycles. -The computer stand is made of aluminum alloy and plastic, which is sturdy and durable. -This bicycle's stopwatch holder can hold different stopwatches and is a good bike accessory. -Installed on the handle, it is also convenient for you to watch the stopwatch to ensure safety. -The base of the computer is small, it is easy to carry and can be placed in a pocket or backpack. Package list: 1 x Bracket 3 x Stop-watch Holders 2 x Converting Holders 4 x Screws 2 x Screw gaskets