Overview of bicycle front pole extension bracket, MTB bicycle bracket, Garmin Edge GPS GoPro camera installation adapter- Mobile accessories Manufacturer: General Model Design Specification: Material: Aluminum Alloy Color: Red Black Suitable for Garminandamp;GoProandamp;Brytonandamp;Cateye Size: 8 x 4.2 x 2cm (3.14 x 1.7 x 0.8in) Weight: 66g Compatible: Suitable for Garmin Garmin1000820810800 520510500200 Suitable for BrytonR530/R330/R310/R100 Suitable for Cateye All models Features: The pole extension bracket is made of qualified aluminum alloy, sturdy and durable. With this kit, you can easily install GPS or GoPro cameras on the handlebars.It is an expansion stand for Garmin GoPro computers, sports cameras, and other accessories. Easy and convenient to use. The packaging includes: 1 bicycle extension bracket, 1 Garmin mounting base, 1 Bryton mounting base, 1 Cateye mounting base, 1 GoPro mounting base, 1 light bracket, 8 screws. The difference is 2% to 3% according to manual measurement. Please carefully check the measurement table before purchasing items. 1 inch=2.54 centimeters. Please note that slight color differences are acceptable due to lighting and screen factors. Opinions on bicycle front pole extension bracket, MTB bicycle bracket, Garmin Edge GPS GoPro camera installation adapter- Mobile accessories Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.