KOM`s garmin mount redesigned with a focus on lower weight and improved aerodynamicsClamp 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 seriesBlackAeroUPC/EAN/GTIN: 687925221354