BuyBits Bike Cycle Handlebar Mount for Garmin eTrex 20 (sku 30046) New compact design - fits the Garmin eTrex 10, eTrex 20 & eTrex 30 Lightweight mount option holds your Garmin to your handlebars. Suitable for round bar / rail from 19mm to 35mm diameter Dedicated slide in holding cradle attaches in the same manner as the original holder.