This Touratech Mount Adapter is specifically designed for the BMW K1200 RS but fits some Hondas too.
It provides a half-inch bar to allow mounting a Touratech GPS Mount or other accessory. Adapts TOURATECH GPS Mounts to the K1200RS. NOTE: does not include GPS mount. This adapter just provides a place for attaching Touratech mounts. Diameter of the bar is approximately 1/2"