The Gepe Universal 2 X 50 Projector Magazine Slide Film Trays are designed to securely hold up to 100 slides for easy viewing and presentation. Compatible with most slide projectors, these trays are a convenient storage solution for film photography enthusiasts. Each unit is a single slide tray, perfect for organizing and showcasing your collection of 35mm slides. Trust in the Gepe brand for quality and reliability in your photography needs.