Square Tube Design: The square shape provides load bearing capacity and stability, making it excellent for sturdy constructions and reinforcement needs Sturdy Aluminum Construction: Made from premium aluminum alloy, these 15mm square tube supports dependable strength and long service life for various structural applications Easy Maintenance: Simple to clean with mild cleaners, these tubes require minimal care while offering consistent functionality in various conditions Rust Preventive Finish: Featuring anodized or painted coating, these tubes resist oxidation and maintain a sleek appearance through extended usage Precise 20cm Dimensions: With accurate 20cm length and 15mm width, these supports are perfect for furniture, construction, and creative projects requiring exact measurements