Pop-Eze are clear plastic, self-adhesive mechanisms that let you create pop-ups without knives, rulers or templates. Just peel, fold and stick to make your own Pop-Up Cards and moveable books! These cool adhesive pieces let you create pop ups with ease for ANY craft project! The Hinge is simply an adhesive Hinge (75 per pkg); the Flip Flap allows a symmetrical image to pop up when the card/page is opened (12 per pkg); the Pop Block is an adhesive "block" that allows an image to pop out from the crease of a card/page (30 per pkg)