The product is a set of replacement plastic sliders designed specifically for Whitman Penny coin albums. These sliders are made in the United States and are sized at 5 3/4 by 2 1/4 inches. They are designed to securely hold coins in place within the albums, ensuring they are protected and properly displayed. Perfect for collectors looking to replace worn-out or damaged sliders in their Whitman albums. Should fit Lincoln and Indian and a Mercury  Dimes. Check the measurements on your old book.