Slack is the main cause of failed tourniquet application. SAM Medical Products' new SAM XT Extremity Tourniquet features TruForce Buckle technology, which auto-locks at a predetermined amount of circumferential force to eliminate nearly all tourniquet slack. This is achieved with an innovative baseline force control that activates locking prongs into the tourniquet strap. Simply click, twist, and secure for a life-preserving tourniquet application.