These HANS posts are specifically designed for use with motorsport helmets that feature an M6 female threaded receptacle. They can also be added to drilled helmets and secured using the supplied backing plates. These posts enable the secure attachment of a Frontal Head Restraint (FHR) or HANS / Hybrid device to the helmet, enhancing driver safety by ensuring the proper connection between the helmet and safety equipment. Approved for use with a wide range of helmets, these HANS posts are compatible with models that meet various prestigious homologation standards, including FIA 8860-2018, FIA 8858-2010, FIA 8859-2015, FIA 8860-2010, Snell SA2010, Snell SA2015, and Snell SA2020. This extensive compatibility ensures that you can safely integrate your FHR/HANS device with a variety of helmets,.