Ballstretcher Unit-X Black

The Oxballs brand Unit-X ballstretcher is a black sextoy for making male attributes more powerful.
In effect, it grips the bursae and penis thanks to the rings with stretchable diameters.

Passing the bursae through the 30mm diameter ring. They are then more round.
The penis passes through the 40mm ring.

Made of stretchy material called TPR