The Nite Ize CamJam is a knot-free cord tightener for securing lighter loads. Each unit is made of sturdy plastic and combines a carabiner clip with a stainless steel gate on one end and a rotating, ridged cam on the other. Clip the carabiner to a hook, D-ring or loop, feed your cord through the cam and pull to the tension you want: the cam locks the cord in place until you rotate it to release. It works in a fixed-end setup or as a loop to bundle sleeping bags, blankets, brush or light loads on a trailer, bike or boat, and it is handy for hanging tarps, tents and gear. The CamJam fits cord from 2 mm to 5 mm thick and can be adjusted and reused many times. This pack contains four black CamJam cord tighteners without rope, so you can use your own cord or paracord.