The Crouse-Hinds/Cooper DPE4004S3 is a Breather/Drain fitting designed for use in hazardous environments. This M20 fitting is made of durable nylon and features a 15mm thread length, perfect for a variety of industrial applications. The fitting includes 3 holes and comes with a brass castellated locknut for secure installation. Ensure your equipment stays protected and maintains proper pressure with the reliable Crouse-Hinds/Cooper DPE4004S3 Breather/Drain fitting.