The RAM-B-346U base fits perfectly on the motorcycle brake/clutch reservoir cover, on which the B-size 1" sphere has been shifted to the edge of the base. It is made of aluminum alloy, the fixing sphere has a special rubber surface - form and function Both are unsurpassed.Installation is simple as everything the necessary screw-washer-spacer is included in the package. This base is NOT an additional tank cover, but a plate that can be mounted over the cover with the longer screws. The package contains three different (20-30-35mm) long M4 screw sets. The two slots in the middle It is 62mm long "center to center" and each knot is 13mm long. This mount is not compatible with the 2016 BMW R1200RT.