This is an Essential Gear Outfitters CAT Combat Application Tourniquet. These tourniquets are used to control bleeding traumatic wounds. They have a built in pressure bar to correctly tighten the tourniquet once it is applied. The tourniquet can be applied using one hand. These tourniquets are manufactured by Phil Durango LLC and Distributed by North American Rescue and are the best tourniquets made. They are used by Military Forces around the world. It has a U.S. NSN No. 6515-01-521-7976. Emergency tourniquets are NEW and current.