Male Urethral Sounding
Beginners should use urethral sounds that have a diameter of the average male urethra, which is 6 mm to 8 mm in diameter. To start you should also use shorter straight urethral sounds (Hegar, Dittle, Rosebud or Hank sounds) to start.Then work up to the longer and or curved urethral sounds, such as Van Buren sounds. Then you can stretch and train your urethra to be able to accept larger toys.