This is the replacement/accessory strap for most of the Nightstick headlamps. The Heavy-Duty Rubber Strap is designed to be on helmets or hard hats. This strap will work with the following Nightstick Headlamps: NSP-4602B, NSP-4603B, NSP-4604B, NSP-4605B, NSP-4606B, NSP-4608B, NSP-4610B, NSP-4610C, NSP-4614B, NSP-4616B, XPP-5450G, XPP-5452G, XPP-5454G, XPP-5462GX and XPP-5462RX.