The Einhell double nipple R3/8 inch male is a connector made of solid brass. This hexagonal pipe fitting with a tapered thread for 3/8 inch external threads is used in the construction of compressed air hoses, for example, as a compressed air extension line, wall connection, or for central compressed air supply. Accessories needed for use, including hoses suitable for compressor applications, fittings, clamps, quick couplings, and more, are available as Einhell accessories for compressors. Double nipples are also used for filling cartridges or as adapters for direct connections. The double nipple features finely crafted threads and excellent precision. It is suitable for applications that require a 3/8" external thread.