Please always test first. Will not melt with propane only torch. Clear to Rasta- Vac Stack - Borosilicate Glass - COE 33 - Lined Tubing... Devardi Borosilicate High Quality Glass Tubes - COE 33 Can be mixed with other boro glass brands, but no guarantees are given. Not to be mixed with COE 104 (soft glass) Five-O - Vac Stack - Borosilicate Glass - COE 33 - Lined Tubing Glass Blowing Tubes 50mm Borosilicate Clear Glass Extraction Tube - (8 Inch) - Extraction Soft Glass Tubing Please click the blue Devardi Glass above to see all our listings. Wyoming Yellowstone National Park 2024 - Ashlan Kathrine Lengths - 11 to 12 inches, 8mm OD x 1.5mm Wall, 12mm x 1.5mm, 16 x 1.8mm (wall thickness may vary)
