Check the listing for details. Bike Stem Extension Computer Mount For Garmin Edge For GoPro GPS Holder Bracket. Condition: New. Listed at 8.99 USD. Hello dear customer.thank you for your purchase.If you encounter product problems or operational problems and other problems, you can contact our customer service immediately, and we will solve the problem for you within 24 hours.Please be sure to contact our customer service.I wish you a happy life! ! ! Features:Made of qualified aluminum alloy, solid, firm and durable to use.With this kit , you can mount a bike computer or Gopro action camera on the handlebar easily.It is a extension mount holder for gopro, garmin computer and sports camera and other accessories.Easy and convenient to use.Compatible with:For Garmin：GARMIN1000，820，810，800， 520，510，500，200For Bryton：R530/R330/R310/R100For Cateye：All modelSpecification:Material: MetalScrew Thread Diameter: 4.8mmColor: Black | RedNote:Please allow 1-3cm (0.4-1.18") difference due to manual measurement and slight color variation for different display setting.Thank you for your understanding, nice day!Package Includes:1 x Bike Extension Bracket1 x Mounting Base for Garmin1 x Mounting Base for Bryton1 x Mounting Base for Cateye1 x Mounting Base for Gopro1 x Light Holder Kit2 x Screws