Support for wedge coupling Ø 19, Nickel plated, Zamak, is a piece of the union system for shelves that is used with the Expansion tip for wedge coupling Ø 19 and the wedge coupling Ø 19. It has a packaging of 2,500 units. In its design, a trapezoidal plate with a thickness of 5 mm x 15 mm high is observed, where the fixing hole to the vertical board is located, which has a diameter of 7 mm that ends with Ø 6 mm at the other end. The base is 22mm x 11.5m x 2.2mm thick and is used on 20mm thick boards.