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

Thule ProBar Evo - Heavy-duty aluminum load bars with a unique tri-slot design for fitting of multiple accessories 1-pack

An aluminium bar with an aerodynamic profile for an exceptionally quiet ride T-slot system for easy installation of accessories Compatible with Thule's

thule frameklem met slot ProBars are very strong, smart aluminium bars incorporating a standard T-track slot in the top of each bar They are often used by people who

thule fietsendrager slot Not Evo Wingbar Also fits Halfords Exodus Aerobar and Rhino rack Reconn bars Rhino Reconn bars Old style Thule Aero bars Once installed it sits approx