hose coupling

     >hose coupling<

Ha ha … yes, but there are several types of coupling, including ball-lock, screw, etc.  I can't believe it doesn't have a specific engineering name/

why not provide more information, like the model number of the water blaster, or take a picture/provide a picture of it.

Rickles:

 

I can't believe it doesn't have a specific engineering name/

 

it probably does but due to your use of terminologies we just cant tell you what it is right now

     >why not provide more information, like the model number of the water blaster, or take a picture/provide a picture of it.<

Sorry, but thought it was common enough to be recognised by someone 🤪 … I gather it is the normal fitting on a Karcher and many other makes.  Some have a swivel screw, others have this push-fit & circlip arrangement.

but we are trying to decipher your terminology, and your explanation of it.

so much easier to provide a picture of a model number then there is zero confusion.

does your quote button not work?