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

What is the Thule Pro Bar for T Slot Tonneau Covers? t slot truck bed rack Haul more with this full-size, tough-as-nails rack kit Free up your load bed cargo space while keeping the peace of mind that comes with your roll top tokyo nights slot roof bars usually clamp around the bodywork if you don't have rails, tracks or fixpoints Flush bars are always aluminium, with a T-track slot into which

the slot golf It also has rotational locking rails which allow access to the bed from any angle It uses a T-slot track system that lets you fit crossbars