I picked up this tube at pets mart, and was pissed that the only sized that would come close to fitting my d___ was the 10 inch long x 2 inch width version. I bought it along with my mityvac for a total of $42. I did not need any funky male or female pieces, and it didn’t take long to fit the few pieces to getter. All I did was ditch the tube that came with the gravel cleaner and pushed the tube that comes with the mityvac through the opening of the gravel cleaner. The only problem is that you will have space between the tube and the gravel cleaner opening, so I just took a piece of note book paper and wrapped it around the tube line, shoved it into the gravel cleaner opening, and liberally applied glue around any surface where air could sneak through.. I allowed it to dry and pumped up with any problems. Today, I will buy some of that plastic grip stuff and work on making my tube more comfortable.
Thanks for the info guys.