Stand 21 HANS Hi-Tech Series 20M-HT, manufactured December 2017. Used only for practice runs, approximately 5 hours total. It's almost like new. It has never been impacted. There is no wear on the tether hardware. There is no "expiration date based on the manufacturing year" for HANS devices that meet the FIA 8858-2010 standard. It can be used in FIA international races. However, in the case of formal races, only the tether is regulated to be within 5 years, so please purchase a new one if necessary. As you can see in the photos, the car name "Austin Healey" is printed on the back. Please understand this. Please prepare the post anchors to attach to your helmet yourself. Purchased in 2018 at the Stand 21 directly managed store in Minato-ku, Tokyo. The warranty is not available. As this is safety equipment, please use it at your own discretion.