(patented) Galvanized fastening kit for 2-wing MECHANICA hinges on flat profiles, with: 2 steel counterplates 20×6 mm, 4 galvanized special screws for counterplate fastening M8x25, 2 galvanized socket head cap screws M4x16 for cover fastening, 1 galvanized grub screw M6x8 for cam bushing fastening.