Not expensive for a little test with weight balls on my penis. The cuff comes close to the glans and you can train your cock. I actually wanted to have the part for my scrotum - but the cuff with the band is too tight for that. Or my egg in the sack is too thick. So the thing goes on my little cock and I let the two balls dangle. But it's not really difficult or great. What else do you do with it? Exc******* is no longer possible.