Abstract: A buckle includes a frame, an intermediate bar integrally connected at two opposite sides of the frame and defining two ports in the frame; and a barrier bar integrally connected at the two opposite sides of the frame and spaced apart from the intermediate bar forming a third port between the intermediate bar and the barrier bar. Optionally, the buckle may be a part of a tourniquet that further includes a retainer, including a first portion having a catch for securing a windlass rod, the catch having at least one top portion, where a surface of the top portion includes a first coupling member; and a second portion having a third strap, where the third strap includes a second coupling member.