IP54 nickel plated brass glands. Made of brass which is then nickel plated in order to improve resistance to hard environmental conditions in which they are used. Consisting of a body within which is located a neoprene washer that deforms as a result of the nut being tightened, and guarantees IP54 water tightness and good levels of cable retention. The seals are resistant to ageing, corrosion and oils and remain inert to the material that sheathes the cables. UNI ISO 228 Gas cylindrical thread.