The system consists of 3 main components: An Adaptor Ring + A Filter Holder + 1 or more filters. 1. Screw the adaptor ring onto your lens. 2. Slide the filter-holder on the adaptor ring until it snaps in place. 3. Slide the filter (up to 3) into one of the filter-holder slots. material: plastic Package includes (camera lens not included): 5 x G.ND2 filter 5 x G.ND4 filter 5 x G.ND8 filter 5 x ND2 filter 5 x ND4 filter 5 x ND8 filter 5 x 6 slots filter case 5 x 49mm Ring Adapter 5 x 52mm Ring Adapter 5 x 55mm Ring Adapter 5 x 58mm Ring Adapter 5 x 62mm Ring Adapter 5 x 67mm Ring Adapter 5 x 72mm Ring Adapter 5 x 77mm Ring Adapter 5 x 82mm Ring Adapter 5 x 3 Slots Filter Holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Otate, slide, decentre in all directions for more precision and creativity. Compatible with P series, control light and colour directly on your raw images at the time of . Keep the quality of your images without excessive post production work. Same filter for all your lenses by just replacing the adaptor ring. Create specific effects saving time on your computer.