This 6061 aluminum flat bar stock measures 1/4 inch thick x 1 inch wide x 6 feet long. It is made from 6061-T6 aluminum alloy with an unpolished mill finish. 6061-T6 is a versatile aluminum alloy known for its good strength, excellent corrosion resistance, and good machinability. This flat bar is commonly used in structural applications, fabrication shops, maintenance departments, and DIY projects where a strong yet lightweight rectangular aluminum bar is required for frames, supports, brackets, base plates, or custom components.