Thank you for viewing! ⭐︎ I strive for quick responses, so thank you for your understanding. ^ ^ ⭐︎ Round Rings Approx. 34mm (Inner Diameter Approx. 25mm) Random Mix Keychain DIY ⭐︎ This is a set of 16 random mix round rings with an outer diameter of approximately 34mm (inner diameter approximately 25mm)♪ ※ There may be an error of about ±1mm for each color regarding the dimensions. They are hook-type and can be attached and detached with one touch. By attaching them to a key holder, you can easily attach them to your bag, etc.♡ This is a very convenient product with various other uses♪ Please check the size in the image♫ These round rings are not readily available in Japan, so don't miss out! ‼️