The project has been performed in collaboration with Thule Sweden AB, a global leader in developing safe, simple and elegant solutions for the transportation of various types of equipment.   The company has developed a new T-track which is telescopically, they stand mount system to connect the roof box to the roof rack does not fit into this. Therefore, the company considered that it was necessary to have a new product that meets the requirements of the new roof rack. They wanted a new, smarter solution would be developed.   The bulk of this essay has been to find a new concept to connect the roof box to the roof racks. The result is a saxkonstruktion that slides down the roof rack T-profile and protected out of a puck-like housing. The product is small, simple and elegant solution. Thesis results are a step in the right direction for Thule Sweden AB that was first to market with a whole new way to connect the roof box to the roof rack.