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The InterGP are helmet mounted ear defenders designed for general purpose use and are part of the new range of helmet mounted ear defenders from JSP. International slot compatibility means the InterGP fits the complete range of JSP Safety Helmets and are even compatible with the JSP Surefit visor system. Easy to attach and detach with spring loaded arms that give an excellent fit to the ear. The steel arms maintain a constant and even pressure, whether hot or cold conditions, no matter how long user wears the cups for. When not in use the arms allow the cups to stand off clearly from the head.