The Lee Seven5 Filter system is a set of filters and rings made to mount to the filter ring of a lens and allow for the change or stacking of Lee 75 filters. Comes with four adapter rings (49mm, 55mm, 58mm, 67mm) two filters (Lee 6ND Hard, Lee Big Stopper 10 Stop) and the filter holder. The 6ND hard filter has a small chip in the corner that won't impact images. Both filters have minor wear along the edges from the holder that don't impact images or function.