I use brass welded rings , no end pinching , one is just big enough to push my balls through then I have to force my cock through , lots of baby oil , then 2 to 7 on my balls , this is a smaller one so I have to really squeeze the balls one st a time through the ring , it's a tight fit pushing them in but that the good feeling , make sure your very close shaved or you start to pull hairs out OUCH
Naturally rubbing it all with baby oil give you a good hard on .
After you do this put your balls between your legs and walk, the feeling is fantastic .you will orgasms. , at least I do . My GF loved it when I was inside her, they banged on her ass , this was a real turn on for her ....... Once you try ,do , this you will keep doing it
A mixture of 50/50% baby oil and baby gel in a squirt bottle will keep your balls and cock well lubed and ready for a few strokes when you take it out to pee