3/4" x 3/4" x 72", (0.049"W), 4130 Chromoly Alloy Steel Square Tube, Seamless, (3 Pack)

Alloy Steel 4130 0.750" x 0.750" x 0.049" Wall 72 inches (3 Pack) Cold Drawn, SeamlessYou may also like 3" x 3" x (0.188" W) x 48 inches, Steel Square Tube.