Screw (1 unit, composed of a male and a female) for assembling the wing with the backplate, Argon system or, ... etc ... Both, the male and female parts are provided with an O-ring that prevents direct contact of the steel with the part to which it is attached. This is especially important in cases where this part is made of aluminum.
Screw type 1/4 "
Available in 3 lengths:
12mm
18mm
22mm