The motorcycle brake/clutch reservoir ball base with B size 1" ball. Compatible with RAM MOUNTS & BRCOVAN any B size double socket arm..Main body made of 6061-T6 aluminum alloy. TPU over-molding ball head, with anti-slip performance..Hardware Included: (2) M6 x 45mm Stainless Steel Hex Bolt, (2) 1/4'' x 1-3/4 Stainless Steel Hex Bolt, (2) 1/2" Spacers..Check before installation: To see if the ball base is compatible with your motorcycle. Check that the dimensions of the two mounting holes on the motorcycle brake/clutch reservoir are compatible with the supplied hex bolts, including the diameter, depth, and center-to-center distance of the two holes. This ball base suitable for hole center distances from 0.98" to 1.45"