The Trailer 'C' Coupling Male M22 is a high-quality air brake coupling designed for use in heavy-duty trailer applications. Made from durable materials, this coupling features a female M22 thread for easy installation and a secure, leak-free connection. With a maximum operating pressure of 12 bar, it is suitable for use with a wide range of air brake systems. Whether you're hauling cargo or transporting heavy machinery, this coupling is an essential component for any trailer.