4130 Alloy Steel Round Tube, Material Alloy Steel, Material Grade 4130, Fabrication Seamless, Heat Treatable Yes, Mechanical Finish Mill, Inside Diameter 1.5 in, Outside Diameter 2 in, Overall Length 12 in, Wall Thickness 0.25 in, Yield Strength 63,100 psi, Machinability Not Rated, Rockwell Hardness B82, Appearance Metallic, Application Fasteners, Gears, Structural Frames, Includes Material Certificate Yes, Outside Diameter Tolerance +0.006 in/-0.005 in, Shape Round Tube