A Sportube Wire Case Pin is included with each new Sportube purchase. They are used to securely close your Sportube and still comply with TSA regulations during travel. Additional Wire Case Pins are sold separately in packages of two. If you choose to use a lock on your Sportube during travel, please use a TSA accepted lock to avoid damage and unecessary hassle as inspectors must be able to access the interior of your case at all times.