EVO HolderEVO filter-holder main plate is made of aluminium, making it both sturdy and light. It's modular design can hold up to 3 filters in scratch resistant polyamide slots. A custom designed felt-like mask on the main base plate prevents light leaks during long exposures when using Cokin NUANCES or similar 2mm thick glass filters.The included front plate allows a round screw-in EVO circular polarising filter (sold separately) to be attached. Designed to meet photographers expectations, EVO of/ers several configurations, by changing the number of slots (from one to three) or their thickness (up to 4mm). The EVO filter-holder is compatible with most Cokin CREATIVE adaptor rings and filters, so existing users can upgrade to the ne.w EVO filter-holder without fear of increasing their filter investment.EVO Circular PolarizerThe EVO circular polarizer is engineered to work seamlessly with the Cokin EVO Filter-holder system but will fit any lens with 95mm or 105mm thread. The EVO C-PL uses an HRT polarising film that absorbs only 1 f-stop of light providing faster and more accurate AF than traditional polarising filters. Its effect is controlled by rotating its front ring. Reflections are removed or reduced revealing the natural colour and subject behind the reflection. This results in more colourful leaves, bluer skies, and increased clarity. It also works great on windows and water by cutting the reflection and seeing through to your subject. The filter comes with an elegant soft-touch box to carry it safely.Specs:- Density: 1- Stop- Graduation Type: N/A- Filter Dimensions: 95mm for EVO M (P) series holder, 105mm for EVO L (Z) series holder- Filter Construction: High Quality Optical GlassWhat's in the box:- Cokin EVO CPL- Cokin EVO Holder- Case