Lindahl adapter rings give secure mounting and protection to lenses. These plastic rings are lightweight, and, if cross-threaded, will not damage the threads on lens. Size 8 rings are used with the Bell-O-Shade, Professional Vignetting System (double bellows), fixed Montagers and Hi-Key Vignetter.
Note: Hasselblad CF (Bay 60) lenses require the CF version of the Bell-O-Shade products. CF versions can be used on non-CF Hasselblad lenses, as well as other cameras, with the proper adapter. This adapter is required for all CB, CFi and CFE lenses.