The standard Lee filter holder which can be tailored to the photographer's exact requirements, to hold up to 4 filters. The Foundation Kit consists of a backplate, filter guides to create 3 x 2mm filter slots, and 4 x No 1 (1/2") and 4 x No 3 (3/4") screws, together with a padded case and a screwdriver with which to assemble it. Once constructed, the holder clips easily to the lens adaptor ring, and can be rotated to any position.