TheBright Tangerine 143 to 110mm Clamp-On Ring for Misfit & Strummer DNA Matte Box allows you to clamp your matte box to the front of your lens with a 110mm front outer diameter. The ring’s split design allows for gentle compression that holds your matte box securely on your lens. Mount your matte box on your lens without needing to use support rods.The ring features Z-cuts, which allow it to compress and grip the lens securely, so your matte box does not fall off. The Z-cuts also prevent light from behind the lens from reflecting of any filter and degrading your image.