12 Well Plate Transwell Tray

This is a tray to hold transwell cups in a costar (#3513) 12 well plate. I had a couple around the lab (which were here before my time) but couldn't find a place to buy any more. Update: It turns out that these cups are called "netwells" (https://us.vwr.com/store/product/4693150/netwell-inserts-sterile-corning)
It's used to easily transfer multiple transwell/baskets of histological tissue at once during staining and washing. This is my first upload, sorry for any issues!