Treadmill Safety Key, Universal Treadmill Magnet Security LockSize:Large outer ring diameter 2.8 cm,inner ring diameter 1.4cm,Cord length 92cmPackadge Include:1pcs * Treadmill Safety KeyNoteThe size may have an error of 1-2cm.If you want to have different color, you can leave a note when you placed the orderDue to different personal measurement methods, there will be an error of 2-4 cm, please erstandThanks for your supportOur products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days.When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provi detailed information about the product, including its features and specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''t hesitate to contact us. We are here to help and will do our best to assist you.Thank you for choosing our product. We hope you enjoy it