This package of three Angled Acrylic Dividers is part of the Memory Dex Collection from Clear Scraps. These acrylic pieces have a protective film that needs to be removed from both sides before embellishing. These laser-cut shapes fit into the Memory-Dex boxes (sold separately) and glide easily over the rails system. These dividers will work with most Rolodex and other systems (sold separately). These dividers measure 4.0" x 3.5". These dividers are made in the USA.