Dedicated to the Stearman Press SP-445 Compact 4 x 5" Film Processing System, this is a two-pack of spare or replacement 4 x 5" Film Holders. These Revision 4-style holders are made from ABS plastic, have a textured surface to prevent film from sticking, and are thicker than previous revisions for more stability. Each holder accommodates two sheets of 4 x 5" film at a time.