Opteka 77mm HD Multicoated Solid Color Special Effect Filter Kit for Digital SLR Cameras Includes: Red, Orange, Blue, Yellow, Green, Brown, Purple, Pink and Gray ND Filters Selectively add color to your images High quality metal and HD glass construction Create an artistic feel through the creation of unnatural lighting effects Double threaded allowing additional filters to be screwed one over the other Extremely solid and lightweight. No wobbling or cross-threading