Attachment for clothes dryer. It's a remix of some other model (I don't remember). Not suitable for everyone, so there is a STEP file to change. Legs with a diameter of 16.2 mm. There is a small nuance with the inner surface, see the model before printing. There are fasteners for bolts, but in my case it was not needed. Printed with supports placed horizontally. After he removed those supports that he could. He heated the leg of the dryer with a building hair dryer and stuck the mount. Everything fits perfectly without bolts!
The author hasn't provided the model origin yet.