Bike Motorcycle Crossbar Mount for Garmin Oregon series (sku 34600)Dedicated slide fit GPS holder with retaining tab fits Garmin Oregon 200, 300, 400t, 450, 450t, 550, 550t, 600, 600t, 650 and 650t. Designed to hold the GPS in the same was as the original cradle. Alternative mounting base ffits ro rails crossbars 8mm 16mm Useful for some motorcycles where traditional mounts are not an option. What do I get? 1 x dedicated holder, 1 x 8mm 16mm mount base