Features: Colorful keyrings help protect your keys from wear and prevent scratching other items. Easily put on and remove the key markers as they are stretchy, and the key caps provide protection for various key types. This key marker is suitable for house keys, office keys, car keys, luggage keys, and more. Made of silicone, the key marker is flexible, durable, small, lightweight, and waterproof, ideal for long-term use. Quick identification: The colored key identifiers are easy to install and remove, featuring an elastic and soft design to better protect the key head. These multi-colored keycaps can be used to classify keys, helping distinguish between different uses or functions for faster identification. Specifications: Component: Silicone Round Size: Approx. 24x24mm Square Size: Approx. 28x25mm Quantity: 20 pcs / 40 pcs Package Includes: 1 Set Silicone Key Caps Note: 1. Please allow 1-2 cm errors due to manual measurement. Ensure you are comfortable with this before ordering. 2. Due to differences in monitor displays, the picture may not reflect the actual color. Thank you for your understanding.