1. Material: These keycaps are made of high quality PVC, with good elasticity and strong toughness, crack resistant, lightweight and durable. They can help you identify your keys quickly, save time and labor, and protect your keys from dirt 2. Size: The diameter of each key cover is about 22mm, the thickness is about 4mm, can fit standard keys, easy to make 3.Pack size: The pack contains colored key identification rings. Different colors can match different room keys. Never worry about exchanging keys 4. Color Matched: These key rings come in a variety of colors, you can organize your keys by different colors for easier identification and quickly find the keys you need when you open the door 5 . Application: Key identification tags are used to separate similar keys by color. They can be a decorative addition to your keys, but also a nice gift for your family or friends