A turnbuckle is a device for adjusting the tension or length of ropes, cables, tie rods, and other tensioning systems. The body of the turnbuckle is reverse thread on opposite ends to allow tightening/loosening by simply turning the body of the turn buckle. Jaw & Eye Turnbuckles feature a jaw on one end which is fitted with a nut & bolt assembly. The other end has an elongated eye to maximize ease of attachment and minimize stress on the eye.