6 Pcs Borosilicate Glass Tube Stem,4Inch Long/12 mm OD/2mm Thick Wall Tubing with a cleaning brush(Colorful)

Package Including：8 Colorful glass tube stems with a cleaning brush

• 【Industrial-Grade Durability】Crafted from ​2mm-thick borosilicate glass​ – engineered to resist thermal shock, prevent cracks, and safely handle extreme temperatures. Built to outlast ordinary glass.
• 【Colorful colors】We have prepared a variety of colors for use on various occasions, more young and fashionable.
• 【​Damage-Proof Packaging】Each tube ​individually wrapped in bubble sleeves, shipped in rigid boxes – certified to survive ​3-foot drops. Zero breakage guaranteed from factory to workspace.
• 【Multi-Purpose】12mm Diameter​Ideal for ​scientific experiments, DIY crafts, and vapor accessories​ – compatible with standard lab fittings and creative projects.
• 【Zero-Risk Satisfaction Guarantee​】If damaged or not 100% perfect – ​we replace it FREE within 24 hours.
• 【​Effortless Cleaning & Reuse】Includes ​specialized brushes for narrow tubes​ – removes residue quickly without scratching. Reuse indefinitely to cut costs and reduce waste sustainably.