The strong metal gives this probe a tough look and makes it easy to insert into the urethra. This probe with three beautiful balls that give you even more sensations will soon become your favorite. Sounding is exciting because it is largely unknown, different, risky and non-traditional.the urethra runs along particularly sensitive areas in the head of the penis and G-spot.sounding stimulates these nerves directly, providing a great sexual stimulus for the daring among us.please note: inspect / wash / disinfect / sterilize. Play safely!