Application - These square tubes are applied to housing construction, industrial, ships, and daily use. Suitable for DIY handmade, boat building, gardening products, shopfitting, frames, crafts, and so on [Aluminum Square Tube]: The package comes with 2Pcs of silver square tube in 30 x 30mm / 1., 18 x 1., 18-inch outside width, 1mm / 0., 04-inch wall thickness, and 200mm / 7., 87-inch total length. [Sturdy & Durable]: Made of 6063 aluminum material, it is designed to be long-lasting, with strong durability, anti-corrosion, rust-proof, and high toughness. Application - These square tubes are applied to housing construction, industrial, ships, and daily use. Weldable Aluminum Profile DTGN 30mmx30mmx2mmx200mm (Width X Wall Thickness X Length) Square Tube - 2Pack - Good For Industrial Housing Construction - 6063 Aluminum Square Square Tube For DIY Projects Uxcell 8.5mm x 0.4mm x 250mm 304 Stanless Steel Capllary Tube for... [Good Choice]: These square tubes are applied to housing construction, industrial, ships, and daily use. Feature - The interior of aluminum square tubes is smooth with no seams. Uxcell 6063 Aluminum Square Tube Seamless Straight Tubing 30 X 30 X 1 X 200mm [Notice]: Please check the size in detail before purchasing!