Bronze Round Tube, Material Bronze, Inside Diameter 0.5 in, Outside Diameter 2 in, Length 6 1/2 in, Alloy Type 932, Wall Thickness 3/4 in, Finish Unpolished, Outside Diameter Tolerance .0300 in to .1340 in, Typical Hardness B34, Temper M07, Straightness Tolerance 0.048 in/ft, Hardness Scale Rockwell, Standards ASTM B505