Interesting thread, I pump my balls in my vacu-tech ellptical cylinder 2'' by 2 - 1/2''. I put a cable clamp at the base of my penis to keep it from being sucked in. Wow smeagle you pumped your balls in the
herc, I tried that once in the
herc but it was a bit too snug on the balls, you need something wider for ball work. Your saying your balls got up to 200mm in the
herc?! It's a really good feeling when I slowly slide my balls out of the tube and dunk them in a warm bowl of water and massage them. I've noticed the actual testicles get bigger do to the fluid retention for a short period of time.