T-slot extension hook Cargo luggage pull ring accessories for car roof

Car & Truck Roof Rack Accessories for sale roof rack t slot accessories Hi all, I have had a roof rack on my 2018 3 for a while now and have always used under mount accessories, but last fall I had the roof rack t slot I suggest using T-Bolts or Sliding T-Nuts in the center slot of the horizontal bar First pic is of a piece for a Thule kayak rack modified

best slot sites sweden I want to put rubber t-slot seals in my CP rack to cut down on wind noise and general crud getting in the grooves I'm having trouble finding