"Headgear features locking cams which eliminate snaps and lower replacement costs. Nylon dielectric bracket (101) is for electrical applications and features rubber tube around the back of the bracket for a secure fit to hard hats. Aluminum rim headgear bracket (102) features 5-system cam lock for added impact resistance. Ratchet, take-up headgear (103) also features 5-system cam lock for heightened impact resistance, large ratchet handle, and cotton sweatband. Constructed from ABS material and crown made of nylon 66. All headgear accepts most manufacturersÃ† universally punched windows and meets ANSI Z87.1-2003 High Impact. For use as secondary protection only. Faceshields sold separately."