This is the hinge for the black metal grill cover over the socket bay in the following Bang & Olufsen models:
Sitting in grooves at the underside of the rear grill, two of these hinges hold the black rear grill, that swings up to provide access to the input/output sockets.
This is a new exact reproduction part, cast in polycarbonate for enhanced strength.
Manufactured by Beoparts-shop.
This is a direct replacement for Bang & Olufsen original part number 3030041.