Consisting of the vocas mb 600 matte box single and double rotatable filter frames a 66 x 66 filter frame a 19mm swing away a donut adapter kit and a side flag kit the vocas mb 623 matte box kit is designed for wide diameter lenses up to 165mm and is perfect for efphdfilm production it features externally operated internal eyebrows and a top flag and can support up to 3 filters