36PCS Glass Tubes with Cleaning Brushes, 8mm x 2mm Heat-Resistant Borosilicate Glass Tube for Lab, Glass Art & Industrial Use

["【Premium Borosilicate Glass Tubes】Made of thick high-strength borosilicate glass (8mm diameter, 2mm thickness), heat-resistant, smooth and durable for long-lasting use.","【36PCS Complete Value Pack】Includes 30 glass tubes + 6 matching cleaning brushes. Sufficient for frequent use, no extra purchases needed.","【Safe Fire-Polished Ends】Smooth, burr-free edges on each glass tube reduce cut risks, safe and comfortable for lab work and crafting.","【Wide Versatile Application】These heat-resistant glass tubes are ideal for lab experiments, glass art, crafts and industrial tasks.","【Easy Cleaning & Reusable】Included brushes clean each glass tube thoroughly, remove residue quickly and extend service life."]