Key cap size: (approx.) 1 x 0.75 x 0.16 inches / 25.4 x 19 x 4 mm (flexible), please make sure it fits your key before purchasing. Good toughness: These key caps are made of PVC with strong toughness, flexible, durable and waterproof, good for long-term use. Flexible material allows it to be easily stretched to better fit your keys without cracking. Key cap set: 40 pieces in total, 8 colors: red, black, white, orange, yellow, purple, blue, green, 5 pieces for each color. Extremely time-saving for those who tend to confuse different keys. Identify your keys: Organize your keys in different colors to make them easy to identify. You can quickly choose the key you need when opening the door. It is suitable for multiple scenarios in factories and offices. They can be firmly attached to your keys without slipping off. Colorful key cap application: This set of key caps is suitable for round, square, triangular and hexagonal heads. The soft and malleable silicone key cap can be used with most standard keys, buy with confidence.