“Invisible” flush-mounted hinge

“Invisible” flush-mounted hinge. The hinge is hidden inside the panel and does not protrude from its plane.
Advantages :

• 3-dimensional adjustment: depth (X): +/- 2 mm / vertical (Z): +/- 2.5 mm / horizontal (Y): +/- 1 mm ;
• Reversible hinge;
• 23 mm width.