Anyone know what this is?

[Dogbash]

Hi all, I need a part for my door that the locking mechanism locks into. Any idea what it’s called and where I can buy? It’s approx. 1 x 4cm. Thanks

[Belle427]

Looks like this one but its out of stock here, just an example though. The number on yours may help.
https://upvcspares4repairs.co.uk/siegenia-960-roll...

[swanny71]

https://www.ebay.co.uk/itm/4-x-Upvc-Door-Lock-Si-1...

[CambsBill]

I have a similar challenge - broken keeps from old tilt 'n' turn windows. Anyone got any suggestions where I might find replacements?

upvcspares have a similar looking item which I might try anyway if nothing better crops up

The number on the back is 47226, length is 54mm, width 21mm

Thanks all (in anticipation)