Hinge in glass-fibre reinforced polyamide based (PA) technopolymer with acetal-resin based technopolymer rotation pin and polyester based (PBT) technopolymer screw-covers. Black color. Assembly by means of through holes for cylindrical and countersunk head screws. The screw covers conceal the assembly screws or nuts and prevent the deposit of dust or dirt in the cavities. They can also be customised with printed logos, marks or symbols or provided in different colors.