Be sure to NEVER hookah dive with PVC hose! Home depot hoses are for sure PVC and PVC is a known carcinogen! Breathing air thru a PVC hose increases your chance of getting lung,liver and other cancers by 10,000 times! Research it on line before you let some con man sell you something using PVC. Breathable air hose will ALWAYS have it printed on the hose. Lots of good hookah systems on the market to use and they all use quality breathable air hose. Ebay con men just want to make a quick buck and run, leaving you with life long health problems. I agree with safe T that spending a little more for a quality system is better that life long health problems. Some of these con men have even been informed that the hose they use is unsafe, but continue to sell it. That sounds like federal mail fraud to me…..