You place the ring around the glans and insert the plug into the urethra.
The plug is open-ended, allowing fluids to pass while still inserted.
The ring is made of surgical stainless steel.
It comes in fotr different sizes, and the glans ring has a diameter of 25/28/30 and 32 mm, respectively.
The actual plug is 3 inches long and 0.2 inch in diameter.