EKWB EK-HD Tube D.I.Y. Kit (10&12mm) EK-HD Tube D.I.Y. Kit 10&12mm is a Do-It-Yourself modification kit for solid acrylic tubing with 10- and 12mm in inner diameter (ID). Using heat gun and the enclosed silicone cord (rod) it is possible to make customized pieces of solid tubing. Use hacksaw to cut pieces to lenght and sandpaper to chamfer and smooth out the edges. Kit comes with silicone insers for both 12mm and 16mm tubing Great kit for first time rigid tubing users