This 12" Binding System takes the guesswork and the consumption out of punching each hole individually. In 4 quick steps, you can have up to an 11" paper ready for your spiral-binder ring (sold separately). For binding books, notebooks, and journals in scrapbooking, paper craft, and other applications. This product is constructed of plastic and steel. Punch includes a dumping litter so work area stays clean. Maximum paper thickness: 0.4mm. Colors: blue, lime green, and white.