Easy to install: Our Cheer Key Chains Bumk are easy to install and can be drilled into holes for easy use. You only need to use pliers to clamp the jump ring onto the small hole to connect the blank to the keychain. Please remove the protective film on both sides of the blank before use Appropriate size for use: Our acrylic keychain blank with a classic cheering shape that is large enough to fit your own keychain pendant. Many applications: These acrylic ball keychains are very suitable for various styles of DIY keychains, which can be taken home for projects, team gifts, teacher gifts, luggage tags and birthday gifts, graduation gifts and completed handicrafts. You can also use finished products to organize your house keys Reliable Material: Our keychain ultrasonic chain is made of high-quality acrylic, which is not easy to break, tear, or fade. The smooth and blank allows you to use DIY patterns or words. Material: Acrylic colour: Black Package Contents: 40 x Acrylic Keychains Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.