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

Thule Fit Kit 3101 The OEM rack is Thule, so it fits perfect the only challenge is you can't attach from the the slot opening by the window,

If you have Elevate Racks and occasionally remove them for periods of time, I found these star knobs on Amazon for $10 which thread onto the

tale of the ninetailed slot Yep, it's 15 series aluminum extrusion For what I am using it for, I felt like that was a good blend of sizestrengthprice

tycopro slot cars Car roof racks · Racks; LoadStop, T-Slot Mounted Loads Stops, 4 pcs set