Double Rainbow Bubbler and Hand Pipe Collaboration by Adam G., Darby, Buck, 2BA, and EusheenInspired by the viral video "Double Rainbow," This amazing mega collaboration came together at the 2010 Colorado Project. The Double Rainbow is actually two pipes combined. The top is a stemless bubbler, and to the side is dry. Both pipes have their own bowl and function very well. The video of this piece being made actually went viral as well. Check out the video here: Details: Length: 15. 25 in. Width: 5 in. Height: 6 in. 2 Push Bowls Functioning