It consists of a pair of supports to be attached to the roof rack frame by 5 rectangular nuts and respective bolts.
Every support is provided with: 1 washer, 1 resin cone-shape member and 1 special key to tighten nuts.
The special resin cone-shape member makes it adaptable to any hole from min 30 mm to max 120 mm.
Key, nuts and attachment kit, all included in the package.