Headgear, Color Gray, Compatible with Brand Honeywell Fibre Metal, Compatible with Manufacturer Model Number F500, Compatible with Series E2Q, P2HNQ, P2NQ, Dielectric Protection No, Features Quick-Lok(TM) Mounting Blocks are Screwed onto the Protective Cap, Quick-Lok(TM) System for Secure Long-Term Combination Use, For Use With Attaches to E2Q or P2NQ/P2HNQ Series Hard Hat, Headgear Style Single Crown, Height 7 in, Includes 4 in Crown with Mounting Cups, Material Plastic, Standards ANSI Z87.1