This is a soft close cabinet lift.
It’s brand new and in its original packaging. We ended up not needing it and then it was too late for a return.
Exact model:
https://a.co/d/ddNOLTa
Rev-A-Shelf Kitchen Cabinet Spring Loaded Mixer and Appliance Lift Assist Mechanism for Small Kitchen Appliances w/Soft Close, Zinc, RAS-ML-HDCR