Retractable concealed hinge to embed in the edges of the furniture. The piece is made entirely of brass with a natural finish. It is ideal for small and light doors. It is composed of two cylinders of 10 mm in diameter and the distance between centers with the maximum aperture is 16.5 mm. For installation, the hole must be drilled with a drill of the same diameter, then tightening the integrated screw and then adding a lateral lag screw through the notch of each cylinder. There are also cylinder models with diameters of 12 mm, 14 mm, and 16 mm. The presentation in packaging is 120, 100, or 80 units.