Classic out-front style mount for Garmin computersClamp diameter fits 31.8mm handlebars and includes shims to fit 25.4mm and 22.2mmCompatible with Edge 20, 25, 130, 510, 520, 530, 810, 820, and 830Not compatible with the Garmin Edge 1000 seriesCarbon FiberUPC/EAN/GTIN: 687925219368