This 6.6 x 6.6 carbon fiber matte box features a swing-away design for easy lens changes. It is designed for use on 19mm studio rod systems. The three 6.6 x 6.6 filter stages allow for multiple filters to be used at once, two of which are 360-degree rotatable. Included in the package are several hard mattes that provide flare coverage for all focal lengths between 16mm and 180mm. When coupled with the three French flags that are also included, there is an almost infinite amount of flare coverage.