Kitchen cupboard widget!

[Jolberg]

Hi all.
Can anyone tell me what this is from. It dropped out of my left hand kitchen cupboard but I can’t work out what is is or where it goes.
Thanks for any help.
Jol

 

[Jolberg]

Another pic

 

[WelshGas]

Another pic

View attachment 112909

Part 12 Slider bracket on rear of kitchen doors.