Twenty Pcs Four Inch Borosilicate Glass Blowing Tubes Clear Glass For Blowing Lampworking Crafting With Four Cleaning Brushes Twelve Millimeter Outer Diameter Two Millimeter Wall Thickness Great For DIY Glass Art And Lab Experiments

Twenty-Piece Borosilicate Glass Blowing Tubes with Brushes ✔️ 12 mm OD / 9 mm ID / 2 mm wall; 20 tubes + 4 brushes

These clear borosilicate glass blowing tubes are designed for glass art, lampworking, and general lab experiments. Sold as a pack of 20 with four cleaning brushes, they’re great for DIY projects in studios or classrooms.

✅ Pack: 20 tubes + 4 brushes
✅ Tube size: 12 mm OD, 9 mm ID, 2 mm wall
✅ Temperature rating: up to 1000°C (2000°F)
✅ Color: Clear glass

💡 What is a borosilicate glass blowing tube used for in precision glass art and lab setups? This handy tube supports a range of tasks from lampworking to experimental lab work.

- Suitable for lampworking, glass blowing projects, and glass art
- Borosilicate glass resists high temperatures and chemical exposure
- Great for lab experiments and DIY glass projects requiring reliable tubing
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