Headgear, Color Gray, Compatible with Brand Honeywell Fibre Metal, Compatible with Grainger Part Number 2KFY7, Compatible with Manufacturer Model Number F400, Compatible with Series E2Q, P2HNQ, P2NQ, Dielectric Protection No, Features Quick-Lok(TM) Mounting Blocks Screwed onto the Protective Cap, Quick-Lok(TM) System for Secure Long-Term Combination Use, For Use With Attaches to E2Q and P2HNQ Series Hard Hats, Headgear Style Single Crown, Height 4 in, Includes Mounting Cups, Standards ANSI Z87.1