Crafted from borosilicate glass, these 4-inch (10 cm) tubes combine clarity, strength, and dimensional precision for crafting and technical projects. Each tube features a 12 mm outer diameter, 7 mm inner diameter, and 2 mm wall thickness, ensuring consistent sizing for structured builds and fabrication work. Designed to tolerate elevated temperatures and routine thermal variation, the material maintains form and stability during cutting, shaping, and integration into custom assemblies. The fire-polished ends provide smooth, clean edges for improved handling and easier alignment with fittings or project components. Suitable for DIY builds, model construction, and technical fabrication, these straight glass tubes offer a reliable foundation for a wide range of project applications.