Specifications: The bike speedometer holder adds a lot of space for bicycle lights, stopwatches, sports cameras or mobile phones. Made of high-quality aluminum alloy, it has high strength, light weight and impact resistance. The installation position and angle can be adjusted at will, which is very firm and will not move. It is easy to install, and suitable for 32mm diameter bike handlebars, and the extension bracket can be installed in one minute. Compatible with a variety of stopwatch, such as suitable for Garmin, for Bryton, for Cateye. Item Name: Bike Extension Bracket Set Material: Aluminum Alloy(Frame), Plastic(Adapter) Features: Adjustable, Durable, Easy to Install, Wear-Resistant Size: 8cm x 4.2cm x 2cm/3.15" x 1.65" x 0.79" (Approx.) Package Includes: 1 x Aluminum Alloy Bracket 1 x Base 1 x Tie 1 x Camera Stand 3 x Stopwatch Adapters