ICH ISO G Nipple Adaptors 60 bar Nickel Plated Brass - ICH 20305, A nipple adaptor with G1/4 to G3/8 parallel threads. The adaptor is manufactured from nickel plated brass and is suitable for use in compressed air systems. ICH 20305 Nipple Adaptor G1/4 to G3/8 60 bar Brass NP