Product Description Super sturdy stem mount that replaces the headset cap. The Garmin device sits directly on the head tube. Particularly suitable for downhill rider positions. Technical Information:Material:aluminium (6061-T6)Steerer Clamp:1 1/8" steerer tubeCompatibility:Garmin Edge 200, 500, 510, 800, 810, 1000 / Forerunner 310XT, 910XTManufacturer Numbers:red:K13-550-REDblack:K13-550-BLKContents:1 x K-Edge Gravity Cap stem mount Weight: black: 18 g Manufacturer: K-EDGE 418 S. 9th St. Boise ID 83702 USA info@k-edge.com Distributor: GROFA Action Sports GmbH Otto-Hahn-Straße 17 65520 Bad Camberg Germany info@grofa.com