Free Shipping! Cokin P Series ND 3-Filter Kit (84 x 84mm) For Cokin P Series Holders, 0.3, 0.6 & 0.9 Optical Density, Includes 1-Stop, 2-Stop & 3-Stop Filter, Optical Resin CR39 Construction, Darkens Entire Image, Allows Wider Aperture, Allows Reduced...