This type of penis plug is popular with SM enthusiasts.
You insert the plug into the urethra and allow the ring to rest on the glans or upper part of the penis head. Using a penis plug is both exciting, painful and, for some, also a humiliating feeling.
The actual plug has small bumps that you can feel when inserted.
The plug is made of steel. It is 7.5 cm long and 7 mm wide at its widest point. The ring has a diameter of approx. 3 cm.