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

thule t slot   Dan thule t slot rack

Thule T-track Adapter 696697 Fits roof box directly into the T-track of the load carrier bar

Thule T track Adapter These T track adapters are compatible for the Thule Ocean roof box range or any other roof box which uses a 80mm u clamp  T track' bars: Thule, Atera, Prorack Whispbar, Cruz, All Audi and Volkswagen, Mercedes

iba ge slot 00c8 v1550 The T-Track adapter is designed to allow you to fit your Thule roof box straight into the t-slot of the load carrier bar Fits bars with T-track width of Product description Thule T-Track Adapter For 45 mm U-Bolt Fits roof box directly into the T-track of the load carrier bar Features: