Bright visibility and sight plane reference. Interchangeable colors. Sizes to fit your rib. This HiViz sight can turn your shooting around adding visibility and a better point of reference to your sight plane. Attaches with magnets in seconds. Features: Hi-Viz Bird Buster magnetic sights come with four interchangeable Lite Pipes of different diameters to match different lighting conditions Includes 3 sizes of magnetic bases to fit the rib of virtually any shotgun Mounts easily with no gunsmithing required LitePipe shape - round and triangular Green and red LitePipe