Jsp mk7 safety helmet jsp ahn120 100 100 introducing the ultimate in safety equipment the jsp mark 7r and surefit8482 attachment system mark 7r safety helmet in building on over 30 years experience designing and manufacturing industrial safety helmets jsp introduce their ultimate most feature rich helmet yet the mark 7r safety helmet has been designed with comfort performance and style in mind and incorporates the most innovative features seen yet on a safety helmet surefit8482