Shafter Ring. A device for the phallus and a break-in stimulator for the prostate that keeps the wearer in pleasure and unrest. The Shafter ring is a stainless steel cock ring of 5.5 cm and a plug of 3 cm in one. With a unique design that allows the user to maintain an erection while the ass is enclosed by a steel round anal ball. Is it a reward or a punishment? You decide!

The anal ball is replaceable by other sizes, which you can find.

here.