Treadmill Safety Key, Universal Treadmill Magnet Security Lock Size:Large outer ring diameter 2.8 cm,inner ring diameter 1.4cm,Cord length 92cm Packadge Include:1pcs * Treadmill Safety Key Note The size may have an error of 1-2cm. If you want to have different color, you can leave a note when you placed the order Due to different personal measurement methods, there will be an error of 2-4 cm, please understand Thanks for your support Our products are made with the splendid quality materials and are designed to provide you with the best possible user experience. We strive to shlp out all orders within three days of purchase, . 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 provided detailed information about the product, including its features and specifications We 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.