Aemygo 4 Inches Colored Borosilicate Glass Tube, 20 Pcs Glass Blowing Tubes, 2mm Thick Wall Straight Glasses Tubing with 4 Cleaning Brush for Art DIY(12 mm OD, 7mm ID)

["PREMIUM BOROSILICATE GLASS FOR HIGH HEAT—Crafted from laboratory-grade borosilicate glass, these tubes offer exceptional heat resistance, chemical stability, and durability. They are the professional’s choice for glassblowing, lampworking, and demanding scientific applications","PRECISE DIMENSIONS & 10 VIBRANT COLORS — Each tube measures exactly 4 inches (10 cm) in length with 12 mm OD, 8 mm ID, and a substantial 2 mm wall thickness. This set includes 20 tubes in 10 assorted colors (Lake Green, Transparent, Golden Yellow, Light Pink, Orange, Dark Blue, Light Green, Dark Gray, Black, Purple) — 2 tubes per color. Plus 4 cleaning brushes for immediate project start‑up.","SAFE & POLISHED EDGES — Engineered for safety and longevity. The 2 mm thick wall provides superior strength, while the flame‑polished ends are smooth to the touch, preventing cuts and ensuring safe handling during intricate work and frequent use.","VERSATILE FOR PROFESSIONAL & EDUCATIONAL USE — An essential material for a wide range of users. Perfect for glassblowing artists, scientific experiments, school classroom demonstrations, and creative DIY projects like making custom ornaments, beads, or small glass instruments.","COMPLETE KIT FOR CREATORS—This value pack provides ample quantity for multiple projects or collaborative work. The inclusion of four specialized cleaning brushes allows for easy maintenance and preparation of tubes, ensuring optimal conditions for bonding and finishing in your glasswork."]