what kind of clips should i use for the robust joint on the 7mm and 9mm tubes? there looks like theres glass in the way
I'm not sure what model of US Tube your referring to, but what I've read is there are many many sizes of Keck Clips made, and there are sizes that fit the US Tubes, what size exactly I couldn't figure out but I did come upon a post from the owner on another forum talking about their newest model (at the time) that uses a Teflon sleeve, the model of tube is the Build A Bong I'm pretty sure, some people refer to it as the Lego bong because you actually assemble it, so with this Teflon sleeve addition you can hold the tube by the joint and not worry about it coming loose. Try to figure out the size of the joint on the tube your looking at and then use a google search to find a Keck clip that matches. If you can't find the size I'd reccomend shooting a nice email to US Tubes asking for specifics.