Milwaukee Bolt Full Brim Vented Safety Helmet, Type 2 Class C Color:Yellow Class E electrical certification on Style:Non Vented (22507) Class E electrical certification on the X5007 ANSI extends the helmet's applicability to utility line work and electrical distribution maintenance where orange colored helmets are common and where Class E insulation is required for working near energized conductors Class G and E (proof tested 20 OSHA 29 CFR 1926 The Bolt's shell and suspension system are manufactured in the United States and are designed to accommodate Milwaukee's accessory ecosystem — the shell includes integrated mounting points for marker clips and headlight clips (headlamp sold separately)