Glass Blowing Tubes Set, 10pcs 15x100mm, 4" Thick Wall Test Tubes For Crafts. Enhance Your Scientific Experiments with These High-quality Glass Test Tubes. Crafted with Precision, Each Tube Features an Inside Diameter of 13mm and a Length of 100mm, with a Thick Wall of 1mm for Added Durability. The Transparent Glass Construction is Resistant to High Temperatures of Up to 200 Degrees and Boasts a Low Thermal Expansion Coefficient, Making It Perfect for Various Laboratory Applications. Both Ends Are Fire-polished for Smooth Handling, Ensuring Safety and Usability. Ideal for Reactions with Small Amounts of Reagent, These Tubes Are Suited for Use at Room Temperature or Under Heat. Features: - Inside Diameter: 13mm - Outside Diameter: 15mm - Length: 100mm - Thick Wall: 1mm - Material: Durable Glass - Color: Transparent - Fire-polished Ends on Both Sides - Heat Resistant Up to 200 Degrees - Low Thermal Expansion Coefficient - Includes 10 Tubes Per Package (Note: Variations in Color May Occur Due to Lighting. Measurement Error Possible Within +/- 1-3cm.). Your order tracking code will be sent on shipping and takes up to 5 days to show live information.