Product Description: High quality borosilicate glass, Premium borosilicate tubing, preferred by scientific and artistic glassblowers world-wide. HEAVY wall tubing 10 pieces, 7mm outside diameter with a 1.5mm wall - all approximately 100mm long. This glass blowing tube bends easily with propane (LPG) and oxygen mix. Brand new, high quality, heat and corrosion resistant. Model: B25900 Name: 10Pcs 100mm OD 7mm 1.5mm Thick Wall Borosilicate Glass Blowing Tube Material: Borosilicate Glass Color:Transparent Length: 100mm/3.94" Outer Diameter:7mm/0.28" Thick Wall:1.5mm Applicable : Apply to home, school, factory, laboratory and so on. Features: - Resistant to high temperature and corrosion. - High quality Borosilicate Glass Blowing Tubes OD 7mm,100mm Length - Fire polished in both sides. Package includes: 10 x Glass Tubes Note: Please allow a slight error due to manual measurements, thank you!