We R Memory Keepers Disc Cinch Book Binding Tool. Create planners, notebooks, and more with the Disc Cinch. No more wires, choose from a variety of discs to add colour and uniqueness to any project. Punch holes perfectly, up to 15 sheets of paper at once. Can punch through paper, cardboard, and even thin metal. Use with We R Memory Keepers Planner Discs (sold separately). Package contains 1x We R Disc Cinch Book Binding Tool.