Easy-to-use durable extremity tourniquet completely occludes arterial blood flow and can be quickly applied using one-hand. The Windlass System uses a free moving internal band to provide true circumferential pressure to an extremity. Windlass Rod securely locks into place using the Windlass Clip and dual locking rings. Reliable fastening system will perform when soiled, muddy, frozen, or wet. Dimensions: Width: 3.8 cm (1-1/2")