That is exactly the one I have. Yes it comes with several attachments to fit different size of hose. I picked one up at AutoZone for $29.00. As for the tube, I picked up 2 sets from Pet co. They were both the Lee’s medium 10” gravel cleaner. The first one I got was the 1.75” tube. Its amazing how when you look at the tube originally and you think, perfect size, this will fit my package. Then come to find out when you try and stick your dick inside, its abit tighter than thought. So I picked up the Medium size 2” tube.
What I did for the ends of the tube is to measure out the circumference and measure the same distance in latex tubing. Then I sliced the tubing along the length and crazy glued it to the edge of the tube to act as cushion (That tube really cuts into you under pressure). Make sure the latex tube cover the entire circumference and hit end to end, otherwise you wont get a seal when you go to pump. I did this to both tubes. Check out my drawing attatchment. This should help make it easier to see.
I use the smaller tube to work the length while I switch to the larger one for girth.
Now here is something I have been testing and trying in lieu of your concern about the cracking of the tubes. I jelq and stretch while I’m in the shower/bath. I will warm up for about 10 minutes. When I go to pump, I allow some water to get sucked into the tube with me. I believe this provides 2 purposes. The first is to keep my package warm since I’m sitting in warm/hot water. The second is to somehow add counter pressure / cushion so the tube isn’t over stressed almost like wrapping a pressure wrap around the penis while its in the tube (like I read somewhere else in this forum)
Just for kicks and grin and I don’t know yet the effects, I am pumping at 5/6 hg for 10min. Originally when I did this without allowing water to get sucked in (just enough to cover the head of my penis) there is a great amount of pressure but a little discomfort. With the water in, there is no discomfort at all. In fact, I am able to go all the way up to 10hg before it starts to feel like the discomfort I am feeling without water at 6hg. Of course I only kept it there for less then a few seconds. Now don’t all go pumping at 10 hg’s and go ripping your dick off…. LOL. I’m just saying, I think the water somehow equalize the pressure without losing the suction benefits. Maybe I’ve stumbled onto something…the “aqua-pump”??? sounds catchy….