low carbon steel tube (single walled & double walled)
4.76 mm x 0.71 mm
6.00 mm x 0.71 mm
6.35 mm x 0.71 mm
8.00 mm x 0.71 mm
9.53 mm x 0.71 mm
10.00 mm x 0.71 mm
12.00 mm x 0.71 mm