These as new magnetic hotplate stirrers for round bottom flasks CAT KM 16.7D are approximately 2 years old. They originate from a Dutch start-up laboratory which didn’t make it.
The instruments are in a perfect state and can heat up to 450 °C. Fine sands is used to improve the heat transfer and contact with the flasks. New price is approximately €800.
For more info and specs see the CAT website.