Ratchet Headgear with Thermoplastic Crown
Easy window replacement•Five position crown strap for additional support and comfort The 3M H8A adjustable headgear features precision ratchet adjustment for a comfortable snug fit and a high strength thermoplastic crown It provides impact resistance over a wide range of temperatures, and has no snaps, bands, or cams This rugged high strength thermoplastic headgear also offers an easy window replacement and a five position crown strap for additional support and comfort•Precision ratchet adjustment for comfortable snug fit•High strength thermoplastic crown•Provides impact resistance over a wide range of temperatures•No snaps, bands, or cams.