• 10 pieces of 4 Inch Borosilicate Pyrex Glass Blowing Tube with Cleaning Brush

• Clear Tubes

• Outer Diameter (OD): approx.12mm

• Inner Diameter (ID): approx. 8mm

• Wall Thickness: 2mm

• High Quality Borosilicate Clear Glass Tube

• Open & Fire Polished On Both Ends For Safe Handling

• Withstand High Temperatures Glass Pipes

• Eco Friendly, Reusable, Easy To Clean, Hot & Cold Resistance

• These premium borosilicate glass tubes are a perfect choice for various projects i.e. laboratory, school, factory , Art, DIY