Compatible with Cokin P series, control light and colour directly on your raw images at the time of .Keep the of your images without excessive post production work.Create effects saving time on your computer.Same filter for all your lenses by just replacing the adaptor ring.Otate, , decentre in all directions for more precision and creativity.The Cokin system consists of 3 main components: An Adaptor Ring + A Filter Holder + 1 or more .1. Screw the adaptor ring onto your lens.2. the filter-holder on the adaptor ring until it in place.3. the filter (up to 3) into one of the filter-holder slots.material: plastic includes (camera lens not included):G.ND2 filter x1G.ND4 filter x1G.ND8 filter x1ND2 filter x1ND4 filter x1ND8 filter x16 slots filter case x 149mm Ring Adapter x152mm Ring Adapter x155mm Ring Adapter x158mm Ring Adapter x162mm Ring Adapter x167mm Ring Adapter x172mm Ring Adapter x177mm Ring Adapter x182mm Ring Adapter x13 Slots Filter Holder x1