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Plastic, spring loaded, should stick shut, then pop open when pushed, has a magnet on the end?
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Think its a part of a Two part fixing I have used in furniture
which you use instead of handles on doors and the metal
part is on the back of the door.
You push the front of the door or drawer and that part pushes the door out
That part you have slots into a sleeve
Something similar to this
[url= http://www.hafele.co.uk/Hafele35a1/templates/hafele/Products.asp?param=8078&ig_id=71286&title=Soft+close+damper ]Soft Close Damper[/url]
It's came as part of a unit we gave bought, however it won't hold the door close as it doesn't lock in place.
OK then more like this
[url= http://www.locksonline.com/acatalog/push-magnetic-door-catch-for-concealed-fixing-9165.html ]Push Magnetic Catch[/url]
Ikea mate - got loads of 'em!
Cheers all.