Advanced Time Trial and Triathlon computer mount featuring a twist-lock system to secure the Garmin computer between narrow aero bars. This is done by turning the mount to lock to the computer between and below the aero bar extensions making it ideal for larger EDGE computers like the 800 and 810.CNC Machined 6061-T6 Aluminum Platform Injection Molded Copolymer InterfaceCompatibility - 22.2mm diameter TT ExtensionsSupported Computers - Garmin Edge 20 25 200 500 510 800 1000 and Forerunner 310XTMade in Boise Idaho USALifetime Guarantee against material or manufacture defects. Damages due to abuse or crashing excluded