Formatt Hitech 85x110mm (3.35"x4.33") Reverse Grad 0.9 (3 Stops) for Formatt Hitech 85mm modular holder Cokin P System compatible with all 85mm holder systems 3 stop (0.9) soft edge reverse graduated ND filter Densest part of graduated ND is at center of filter, graduating to lightest part at top Ideal for sunrises and sunsets which require adjustment of light at horizon Made in the UK in rugged and durable CR39 resin Compatible with Cokin P size and all 85mm filters from 1.5-2mm depth