This Gobe 52mm The Basics 1Peak 6-Piece Filter Kit can provide a number of commonly applied or select enhancements to your imagery. Included is a UV, a circular polarizer, and a sold neutral density filter that are each constructed from optical glass which features 12 layers of anti-reflection coatings on each side. These coatings also offer scratch protection to the filter substrate while promoting clarity as well as color fidelity, and result in an improved beading effect when in contact with water or oil for more efficient cleaning. For enhanced durability while remaining lightweight, these optical glass filters are each set within a magnalium-alloy filter ring. Similarly, this kit's graduated red, graduated orange, and graduated blue filters also feature magnalium-alloy filter rings and are constructed from optical plastic.