' Rod Stock, Corrosion Resistant, Aluminum, Alloy Type 6061, Diameter 3/8 In, Length 6 Ft, Unpolished Finish, Temper Extruded, Diameter Tolerance +/-0.009 In, Length Tolerance +/-6.000 In, Typical Tensile Strength (PSI) 45000, Typical Yield Strength (PSI) 40000, Typical Hardness 95, Hardness Scale BHN, Standards ASTM B211, AMS-QQ-A-220 '