Ratcheting logistic strap with E-Fittings on each end, attaches into horizontal or vertical E-Track,(sold separately). Works by pressing the end tab, sliding the fixed end into the track and then snapping the other end into place. Tractor trailers can belined with E-Track so the driver can tie the load off at any point along the length of the truck. In any use vehicles can drive or cargo can be placed directly over the track. No need to hollow out floor boards to install recessed anchors or pan fittings.Working load limit of 1,000 pounds.