Hi Tallythwacker, The link for that company is https://www.ctc-company.com
Sorry you will have to copy/paste that into your address bar.
"the only pump on the market to control the vacuum allowing it to release the vacuum for a split second 50 times a minute in sync with the heart’s 200 beats a minute. This allows fresh blood and oxygen to travel to the penis, a must for maximum growth!" (copied from their blurb)
They are NOT cheap I think it ws about $350 plus freight. The cylinders go from 2" to 3" in 1/4" stages. But then I always figure you get what you pay for.
Usually my sessions are morning and late evening just before retiring I must admit that sometimes I lose track of time and my pumping session may go on for an hour and a half or more. While I started out with the 2" tube I outgrew it in about 6 weeks, now I start off with the the 2-1/4" for 1/2 hour and then switch to the 2-1/2" for another 1/2 to 3/4 hour.
It is actually quite pleasant except for some hardness at first at the base. I believe the rubber gasket supplied is not quite full enough for maximum comfort. Thanks to one of the other guys at this forum I have now overcome that with his suggestion of using "sealastic" to build up a wider and softer gasket - really works great!
Now to the benefits - apart from having helped greatly on the medical side. My penis is now so much bigger and SO sensitive that when I wake at night with an erection and my wife’s hand reaches down to fondle it - as she likes to do whenever she can get her hands on it - the sensation is OH WOW***!!! absolute ecstasy.!! stars popping! bells ringing!
So you can see I am going to keep going with this on a regular basis - not with any express desire to get bigger (that has just been an added and very pleasant bonus) but to keep experiencing the fantastic feelings!!
Way to go.