This punch is compatible with all Happy Planner sizes making the most versatile tool in your planner kit. Punch your own pages to add to your planner. Designed to fit perfectly in 8 1/2 x 11 inch Happy Planners. Punch capacity is 3 sheets of paper or 1 sheet of cardstock. it is not intended to punch laminate or adhesive. This package contains one 11 inch long punch that creates eleven holes specifically for The Happy Planner.