Description: Material:Made of quality K9 coating photography artificial crystal, wear resistance and can provides long service time. Crystal Filter:Our prisms have high light transmittance and create a beautiful rainbow color . Uses: Creative photography, fantasy glare,with this crystal Filter, you can get some interesting effects while taking a photo. 1/4inch Screw Hole: The 1/4inch screw hole allows you to attach the prisms to the Filter on a stand or tripod, so that you can easily rotate and hold the Filter,and it is light to carry. DIY Photography accessories :Also a new way to observe the world, create cool refraction in photos,can see a novel scenery, night scenes, and etc.Perfect for any professional and hobby photographer.It is also a great gift for family or friends. Specification: Material: K9 Artificial Crystal Round Size: Diameter 6cm/2.36inch Square Size:5cmx5cmx5cm/1.97inchx1.97inchx1.97inch Triangular Size: 13cmx3cm/5.12inchx1.18inch Package Includes: 1 Piece Camera Lens Filter Filters Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!