Description Specification Size: Approx. 80 x 42 x 33 x 36mm Color: Black, Red Great accessory for cycling enthusiasts. Material: Aluminum Alloy Weight: Approx. 70g Direct wide slot user-friendly design, suitable for different specifications of the installation. Feature Suitable for Garmin & for Gopro & for Bryton & for Cateye Condition: 100% Brand New and High Quality Easy to install, suitable for any bicycle's stem. This stem extension mount is made of qualified aluminum alloy, solid, firm and durable to use. It is a extension mount holder for gopro, garmin computer and sports camera and other accessories. Direct wide slot user-friendly design, suitable for different specifications of the installation. Package Include 1piece x Mounting Base for CATEYE 1piece x Mounting Base for Bryton 2pieces x Screws 2pieces x Gaskets 1piece x Bike Extension Bracket 2pieces x Screw Retaining Rings