Does Audi roof crossbars have the T-Slot?

Easy installation and removal without drilling; T Slot extrusion crossbars provide unparalleled mounting options Constructed with high-quality materials, the

Hold it right there with sturdy steel Yakima LoadStops that attach quickly to Yakima HD Bars—or other T-slot crossbars—to eliminate side-to-side gear

tigers gold slot 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,

t slot milling Syneticusa Adjustable Crossbar Truck Bed Rack, cross bar Heavy Duty Fit F150 ABOUT THIS ITEM: Condition: 100% Brand New Crossbar made with heavy duty