Grid Clip Kits™ are designed to fit on all standard ceiling grids used with dropped or suspended ceiling systems. Simply unwind as much string as you need (up to 48"), thread the metal tab on string through the hole in the Close Pin Clamp™, put the Twist-on Grid Clip™ across the desired ceiling grid and twist to install. Now you can hang papers, posters, models, mobiles and other lightweight to medium weighted objects on the Close Pin Clamp™. No more paper clips, push pins or getting creative in order to hang items from dropped or suspended ceilings. Please use caution when installing and/or try our Put-er-Up-er™ tool (sold separately) for the safe way to put up the Grip Clip Kits™. Each pack includes 10 Grid Clip Hangler™ kits 10 kits. Sold as 3 packs for a total of 30 Grid Clip Kits. Recommended age 5+ years