Heavy Duty T Slot Cross Bar Load Stops 4pcs Set Adjustable for Truck Bed Ladder Kayak Features： 1、Easy Adjustment: Easily adjust on the bar to fit different load widths. Note that the load stopper will fit channels or slots crossbar with a width of 20mm or larger. 2、Application: These load stops are designed to slide into the T slot channels of the rack, allowing you to hold items in place, and can also be used as tie down points. 3、Rugged Material: The load stop is made of premium metal with a rugged construction, which is wear proof and high strength for long term use. 4、Easy Installation: The load stop bracket is easy to install without tools. No need for complicated steps, convenient and quick, saves you time and effort. 5、Part Number: The replace part number of the load stop kit for reference is 597944, please confirm whether it is consistent with the part number you need. Specification： Item Type: Load?Stops?? Replacement Part Number: 597944 Color: Black Material: Metal Installation Type: Crossbar Mount, Roof Mount Fitment: Fit for Ladder, Firewood Skis, Snowboard, Ski Board, Kayak, Roof Rack Accessories Package List： 4 x?Load?Stops?(Total 16 parts)