Breather pipes fittings

[KOFFEE]

Hi Folks

I have a question.

On the breather pipes on 2.5 Litre Rover 75, there is a holder/clamp that you push the pipe into, and you have to push the outer ring to release.

Does anyone know what they are called and also where you might get them from. As one is totally stuffed and wouldn't mind having some spares

Thanks

Damien

https://sc02.alicdn.com/kf/HTB1DGiXOpXXXXb2aXXXq6xXFXXXT/LLH102660-Rover-75-2-0-2-5.jpg_350x350.jpg

[Lord of Hog]

Don't quote me on this but I have a vague recollection of being told that certain BMWs use the same size locks. I have also put together what the workshop manual refers to as "something that looks like a shameless bodge but actually does the job" but unfortunately it's on the connection that sits under the upper manifold chamber just behind the throttle body so I'm unable to take a photo.