Usage Tips:Featrures1. Heat Shrink Plastic Set include: Including 25 x Shrink Film Sheet, 10 x keychains, 10 x butterfly clutches, 10 x cell phone straps lobster clasps, 5 x bead chains, 20 x ear hooks, 100 x open jump rings, 1 x Hole Punch. This is a very interesting heat Shrink plastic keychain making set.2. Shrink Plastic: 25PCS art paper make of PVC, Approx. 7.9 x 5.7 inch / 20 x 14.5 cm, 0.3 mm thick. Shrinks to 20% of its size after heating. 3. Just draw and color your favorite art, cut it out with scissors and it will shrink in your oven4. Endless creative uses of DIY pendants, earrings, keychains, jewelry, buttons, gift tags, zipper pulls, bookmarks and ornaments Specifications:Shrink plastic: Approx. 7.9 x 5.7 inch / 20 x 14.5 cm, 0.3 mm thickKey chains: 1.5 inch / 3.8 cm(length), 0.8 inch / 2 cm (diameter)Ball chains: 4 inch / 10 cm (length)Ear hooks material: AlloyHole Punch material: AlloyPackage includes:20 * Shrink Film Sheet, 30 * Keychains, 10 * Brooches, 20 x Ear Hooks, 100 * open jump rings, 1 * Hole Punch