The Standard 4-Point Chin Strap with Buckle and Selector is a replacement part for the 3M SecureFit X5000 Series Safety Helmet. Providing an essential function, this chin strap works alongside the advanced suspension system for both enhanced comfort and safety. 4-point chin strap selector system unique to 3M allows wearer to convert between EN 12492 and EN 397 standards. If the chin strap on your 3M SecureFit X5000 Series Safety Helmet is damaged or worn, reach for this replacement part for continued protection.Replace the chin strap on your 3M Safety Helmet. There are a variety of replacement chinstraps available for 3M Safety Helmets. Choose from 2, 3 or 4 point chinstraps and a variety of buckle options.