Roller designed for use with Thule ProBar Evo bars. Load ladders, kayaks and other long items easily from the rear of your vehicle. FEATURES: a Mounts to the rear t-slot of Thule ProBar Evo load bars and keeps the top of the roof rack free for unobstructed loading a Allows for easy loading of long or heavy cargo to your roof rack a Compatible with Thule ProBar Evo load bars a Loading width: 25.6 in / 65 cm TECHNICAL INFO: a Fits Thule WingBar Evo- No a Fits Thule SquareBar Evo- No a Fits Thule ProBar Evo- Yes a Maximum load- 100 kg