(patented) Fastening kit for 3-wing MECHANICA hinges with: 4 zamak inserts and 4 galvanized inserts, 4 galvanized special screws M8x40, 2 screws M8x28 and 3 galvanized socket head cap screws M4x16 for cover fastening, 1 galvanized grub screw M6x8 for cam bushing fastening.