The RRS-9000078 Round Dovetail Tripod Adapter Plate by Really Right Stuff enables the user to mount their tripod head to any Arca-Swiss type clamp. This plate contour's to the base of either a ball head or gimbal head, outfitting the head with an Arca-Swiss style rail on the base. This lets the user mount a leveling base with a clamp and rapidly switch between tripod heads. The RRS-9000078 adds quick-release compatibility and works with the Really Right Stuff BH-40 ball head and the Wimberley WH-200. Really Right Stuff Round 2.1" Dovetail Tripod Adapter Plate RRS-9000078