What is the Thule Pro Bar for T Slot Tonneau Covers?

Retrax RetraxPRO XR Retractable Tonneau Cover - retrax t slot accessories The Trax Rail System will work with most T-slot accessories from Yakima, Thule, Rhino Rack and many more offering endless possibilities Pairing the Trax Rail retrax t slot accessories The perfect combination of accessories for your truck!! This Yakima T-Slot package is just what you need to take the hassle out of gathering all the parts

chicken madness slot Just showing off some of the ways to use the T-slot rails on the Retrax XR cover The biggest thing I wanted to do was to load bikes on top