This steel air nipple, or plug, is a durable fitting designed for use in pneumatic systems that conform to the ARO 210 Interchange Series. It features a 1/4-inch NPT male threaded connection for easy installation on air hoses and tools.

A key feature of this nipple is its broad compatibility with other brands. As a Milton 777 model, it also crosses over to the following part numbers:

• Amflo: CP37

• Tru-Flate: 12-324

• NAPA: 90-618

• Lincoln: 13329

• Foster: 210-10

This nipple is typically rated for a maximum working pressure of 300 PSI and is made of steel to resist corrosion and ensure a long service life.