Film/Slide/Negative Carrier for Bower & Opteka Slide Copiers Fits Bower and Opteka* slide copiers. (See Opteka note below) Copy from unmounted 35mm negatives, transparency strips, black & white film, 35mm microfilm. Surrounds, flattens mounted slide film against the copier, facilitating the best image quality. Helps assure the fastest and most accurate image reproduction. Detailed instructions are included.