A Jobu Design arca-swiss compatible, extra-long (5.5") adaptable lensplate to fit most styles of telephoto lenses. Movable back stop allows for several mounting positions (4 positions x 2 variations). Drilled to adapt to most flash bracket systems. Double-dovetail profile allows for quick-release flash as well. Supplied with 2 mounting screws and one 1/4" to 3/8" reducer bushing. Fits lenses up to 500mm f/4, most popular use: 70-200mm f/2.8, 300mm f/4, 400mm f/5.6, 100-400mm.