The helmet adapter is attached to the helmet once. Thanks to its magnetic holding force, it ensures that you can quickly attach & remove your head-up display from the helmet. Features Features another helmet with helmet adapter Holds your TILSBERK head-up display in the helmet Suitable for installation variant A & B Scope of delivery Helmet adapter with tabs Adhesive pads Note When purchasing the TILSBERK Head-Up Display, a narrow helmet adapter & a helmet adapter with tabs are already included in the set. The additional helmet adapter is only required if you want to equip additional helmets with the Head-Up Display.