The Happy Planner Big Punch is designed to fit 8.5" x 11" sheets into Big Happy Planners. Now you can punch your own paper and add it to your own Happy Planner. The Happy Planner Big Punch will punch up to 3 sheets of paper, and 1 sheet of card-stock; it is not intended to punch laminate or adhesive. Details: 11 hole punch Punch capacity: 3 sheets of paper or 1 sheet of cardstock For use with The Big Happy Planner (not included)