Sliding Tether with Post Collar Anchor attachment to be used in conjunction with the HANS Sport I/II safety device. The HANS (Head and Neck Restraint System) device consists of a carbon fiber collar that is worn around the driver's neck and shoulders. It is designed to prevent excessive movement of the head and neck during a crash, which can help to reduce the forces on the head and neck that can cause serious injury or even death. The Hans Device works by transferring the forces that would normally be transmitted to the driver's head and neck during a crash to the stronger and more stable parts of the body, such as the chest and shoulders. This reduces the likelihood of injury and can help to save lives in the event of a crash. The Hans Device is now widely used in many forms of motorsport, including Formula One, NASCAR, and the World Rally Championship, and is considered to be one of the most important safety innovations in the history of motorsports.