The product is a Lot of 3 Vintage View 2 Master Sawyers Rotary Slide Tray Carousels, each capable of holding 100 slides. These stackable trays are designed to be used with slide projectors and are compatible with brands such as GAF, Sears, and Wards. Made in the United States by Sawyer, these rotary slide trays provide a convenient and organized way to store and display your slide collection.