Simulator cylindrical taps, Italy

Tightening/loosening involves a three-finger grip in which the thumb is pulled out to the side and the knuckle of the middle finger is opposite the index finger.
The role of the middle finger in opposition to the thumb is enhanced by the support that the third finger receives from the fourth and fifth fingers.
Three different head diameters allow for more complexity.
The screws have 3 diameters of “caps” for different levels of difficulty in gripping with the hand or wrist. "Hats" made of polyethylene like a stand (stand sold separately) can imitate the lids on food cans, light bulbs, gas taps, etc.