CamJam cord tightener. Designed to lock securely into place with the simple pull of a cord. Easy, knot-free way to tighten, tension, and secure lighter loads of all kinds. Features a carabiner clip and a rotating, ridged cam mechanism. Anchor the carabiner to any hook, D-ring, or loop, and feed cord through the cam until the desired level of tension is reached. Pull firmly, and the cam locks into place and stays until it is released by rotating the cam. Easy to adjust and readjust. Ideal for hanging and securing tarps, tents, blinds, gear, and more. Create a loop by clipping to one end of the cord and pulling the other end through to bundle sleeping bags, blankets, cut brush, or wrap light loads to wheelbarrows, wagons, dollies, bikes, and boats.