The operating mechanism is enclosed within the main casing, thus presenting an impeccable aesthetic result. Features an intermediate elastic system that allows for a consistently usable and pleasant trigger tension, capable of compensating for any variations that may occur during work. It is entirely made of stainless steel AISI 316, mirror-polished finish on the outside and a bright finish on the inside.For the latch fastening, what follows is required:- 2 M4 countersunk screws for the base plate,- 2 M5 rounded head screws for the hooking tooth.