Take your key spinning to the next level with this turbo aluminum spinner. Attach this ball bearing turbo to your keychain and enjoy a boosted level of spinning performance. Aluminum is a durable metal that should provide years of smooth spinning. The opening for your finger is 17mm which is just over a ring size of 6.5. Dr SpinZ stands behind these spinners and is constantly looking to improve. Please contact if you are not fully satisfied or if you have recommendations for future designs. Only the spinner is included. No keys or keyring will be included since most people already have these and we do not want to waste resources.