Adaptor for spray cans

An adaptor for spray cans having a neck, the adaptor comprising a body adapted for positioning on the neck of a spray can, and an actuator for operating a dispenser nozzle of the spray can, wherein the body comprises a cylindrical channel, said actuator being insertable so as to slide in the cylindrical channel, and wherein said adaptor also comprises a plurality of nozzle-holders, each of which is suitable for being joined to a nozzle for dispensing to a mechanical instrument, the adaptor further comprising a movable pusher and a fixed dispenser connector, the dispenser connector having an inner cylindrical surface, an outer cylindrical surface and a connector element for engaging with the nozzle of the spray can, the connector element comprising an aperture on a side facing downward, in which the nozzle of the can may be inserted, and a closed surface positioned on an opposite side, facing upward, said closed surface being adapted for interfering with the pusher, wherein the connector element is connected to the inner cylindrical surface of the dispenser connector by a peduncle, said peduncle being flexible so as to permit its flexion by finger pressure applied to the pusher, and wherein inside the peduncle a duct which originates from the aperture of the connector element and ends at an opposite end with an orifice positioned on the outer cylindrical surface of the dispenser connector is housed.