Fits standard 1 inch wrench: 0.87 inch in diameter. Ignition keys not suitable for cars, motorcycles or boats! Great identifiers: separate and organize similar keys by color to identify them faster. A huge time saver for those who tend to mix up different keys. Flexible and soft: Made from rubber, it resists tearing and fading. Bendable material makes it easy to expand to better fit your keys without cracking. Ease of Use: Very easy to put on/take off the key. They can be securely attached to your keys without slipping. Ideal for avoiding noise from collisions. 32 pieces in 8 colors: 8 colors for a perfect coding system to mark multiple keys. We only sell key cases, not other items in the picture. Due to differences between the different monitors, the pictures may not reflect the actual color of the item. Due to the manual measurement, please allow slight errors in size.