You are buying Hettich hinge restrictors which will reduce the opening of doors so they dont hit walls and other cupboards.

For use with Hettich aluminium frame hinges and reduces the opening From 95 to 85 degrees. 

A clip should be installed to each hinge within a cupboard.

Hettich part number 9072542 9071470

I can get other Hettich hinge restrictors on request and will only sell through eBay.

Thanks for looking.