●6061 aluminum has a good strength-to-weight ratio, above average corrosion resistance, good machinability, and is excellent for welding. ●2" Outside Diameter, 0.125" Wall Thickness, 1.75" Inside Diameter, 12" Length, OnlineMetals ●T6 Extruded ●6061-T6 is typically used in aerospace, automotive, cameras, couplings, marine hardware, electrical components, decorative hardware, structural applications, pins, brakes, pistons, valves, and bicycle frames. ●Meets ASTM-B429, ASTM-B221, AMS-QQ-A-200/8