Built with the strength to keep heavy loads in place, our steel, t-slot Load Stops integrate with our new truck collection HD Bars, and most T-slot crossbars. The Load Stop, t-slot quickly installs and adjusts with the turn of a knob and includes integrated tie-down points to makes it easy to secure lumber, ladders, canoes and more.LoadStop, T-SlotProduct DetailsMade from solid steel for many years of useT-slot design for easy attachment and removal on our HD Bar, JetStream(TM), and other standard t-slot crossbarsSimple, tool free adjustment is done with the turn of a knobBuilt in tie-down points make it easy to secure gearHandles up to 250 lbs. on our HD Bars, and up to 165 lbs. on Yakima JetStream(TM), FlushBar(TM) and RailBar(TM) crossbarsSet of fourProduct SpecsWeight: 4.00 lbs.Dimensions: L 4.50 in x W 1.50 in x H 6.50 in