agreed, don't use it. Get some tube, weld thick washer onto a pair of old vise grips and grind a half moon into the other jaw. Then use them to pinch a knurl into the tube ends to hold the silicone elbows you will need to buy. Your hand will not thank you, but once you get the hang of it, it's pretty easy to do well. Put tape around the tube where you want to put the knurl and follow that around the tube so you don't run off. Mock up the whole system before you knurl, makes it super simple to dry fit the hoses.