Nite Ize CamJam Cord Tightener - 4 Pack - Plastic Black Small. Made of sturdy durable plastic it features a carabiner clip with a stainless steel gate on one end and a rotating ridged cam mechanism on the other. Simply anchor the carabiner to any hook D-ring or loop and feed your cord through the cam until you've reached the desired level of tension. Pull firmly and the cam locks into place and stays that way until you release it by rotating the cam. Easy to adjust and readjust the CamJam is made to use and reuse hundreds of times in hundreds of ways. Specifications for Nite Ize CamJam Cord Tightener: Manufacturer: Nite Ize Size: Small Color: Black Features of Nite Ize CamJam Cord Tightener Knot-free way to tighten tension and connect lighter loads Sturdy durable plastic Lightweight Fits rope sizes 1/16"-3/16" 2mm-5mm WARNING: NOT FOR USE WHERE DISENGAGEMENT COULD RESULT IN BODILY INJURY OR PROPERTY DAMAGE. NOT FOR CLIMBING. Package Contents: Nite Ize CamJam Cord Tightener Nite Ize NCJ-01-4R3: CamJam Cord Tightener - 4 Pack - Plastic Black Small