These square tubes are aluminum alloy, very strong but light weight. Each size telescopes into the next corresponding size. For use in plumbing, HVAC and automotive. Great for scratch builders, modelers, crafts, machine shops and architectural applications.

• • Easy to bend and cut to desired length
• • Endless project uses and it is easy to use
• • It is highly durable
• • Used for home decor application, mosaic pin for knife making
• •