The CamJam XT Aluminum Cord/Rope Tightener features Nite Ize signature knot-free CamJam tightening and tensioning technology. Built from durable cast aluminum, this rugged combination of a carabiner and cam mechanism can tighten, tension, connect, and secure serious loads.The large rope tightener holds up to 500 lbs. CamJam XT integrates a carabiner clip and gate on one end, and a rotating cam mechanism on the other. This intuitive design allows the CamJam XT to be configured in either a Fixed End or Loop System to securely tie down equipment, gear, and other heavy loads. In both systems, the CamJam XT can be easily adjusted and re-adjusted time and time again to tackle a multitude of tie-down projects over the years. The XT Large holds rope from 1/8" - 3/8" (3mm - 9mm) wide.