The RAM-B-346 base fits cleanly over your existing brake/clutch reservoir cover with the 1" ball offset. Made of die cast aluminum with an over molded rubber ball, both form and function are unsurpassed. Installation is simple and all necessary hardware is included. The mount is NOT an additional reservoir cover, but instead a plate shaped similarly to the cover that mounts above the cover using the covers screw holes and longer screws. The kit actually comes with 3 sets of screws of differing lengths. The center 2 slots are 2 7/16 inches center to center and are just under a 1/2 inch long. This mount is not compatible with the 2016 BMW R1200RT.Features: Fits over your motorcycle's existing brake/clutch reservoir cover; includes set of M4 x 35, M4 x 30, and M4 x 20 screws Included B size 1" RAM® rubber ball allows for connection to any B size RAM® double socket arm; ball and socket technology allows for near-infinite adjustability Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments Specifications:BALL SIZE: B Size (1", 25.4mm)Hardware Included: x4 M4 x 20mm Machine Screws x4 M4 x 30mm Machine Screws x4 M4 x 35mm Machine Screws x4 M4 Flat Washers x4 .188" Nylon Spacers