Tubing, Tube Material Brass, Inside Dia. 0.409 in, Outside Dia. 7/16 in, Wall Thickness 0.014 in, Tube Length 1 ft, Pipe Size 7/16 in, Temp. Range 0 Degrees F to 1690 Degrees F, Seamless For Plumbing, HVAC And Automotive, Standards ASTM B135, ASTM B587 Package of 10.