HANS FHR Head restraint device Medium in good condition

FHR device from HANS now mandated by FIA for many categories of racing and Hillclimbing.  Replicates the design of the top level devices used in F1 but in a more affordable polymer material. The hollow collar reduces the weight making it a light entry level HANS device. Ts the most cost effective device available. Sliding tethers are fitted as standard to provide greater freedom of movement. Helmet posts/clips are not included. Not sure of angle but used in Single Seater.