Group Neutral-Density Filters (ND filter). Includes Graduated Filters and Tinted Filters. Cokin, Formatt, Galen Rowell, and Singh-Ray. Square Filters measure 3x3'' and 4x4''. Rectangular filters measure 4.75x3.25'' , 6.75x5'', and 7.75x5''. All in good condition, some unused. Some filters come with storage bags.