The strong metal construction of this sounding gives it a harsh appearance, making it easier to insert into the urethra. Sounding is exciting because it is quite unfamiliar, different, daring, and non-traditional. The urethra passes through particularly sensitive areas on the head of the penis and the G spot. Sounding directly stimulates these nerve endings, providing an exceptional sexual thrill for those who dare to try it. Remember: inspect / wash / disinfect / sterilize. Play safely!