Formatt Hitech 165x200mm (6.5"x7.87") Neutral Density Soft Edge Grad 0.9 (3 Stops) for Lucroit 165mm holder 3 stop (0.9) Soft Edge graduated ND filter Soft edge filter has seamless transition at middle of filter and ideal for all landscape and horizon work Made in the UK in rugged and durable CR39 resin Compatible with Lucroit 165mm system for super wide angle lenses