American style

Aro Interchange Manual Couplers
Compatible with Aro interchangeable connectors, a solution ...

With case hardened for a long service life.

Tru-Flate Interchange Manual Couplers
Different body sizes: 1/4", 3/8", and 1/2". ...

With case hardened for a long service life

Industrial Interchange Manual Couplers
Available in various body sizes, including 1/4", 3/8 ...

With case hardened for a long service life