The Blum Aventos HK-S Cabinet Door Lift Mechanism Pair is a set of two steel hinges .Featuring a soft closing mechanism, these nickel-plated hinges provide a smooth and controlled opening and closing function. The grey finish adds a modern touch to any cabinet, making it suitable for a variety of home decor styles. Perfect for DIY enthusiasts looking to upgrade their cabinet hardware with high-quality, durable component

These hinges came with a kitchen but were never used (covers have minor storage marks)
I have 3 pairs of these available if interested (price is for 1 pair)