This 1-3/4" OD x 12"-Long DOM seamless round tube with 1/8" wall thickness is made of mild steel with a carbon DOM tubing alloy. It is a round tube shape and has a width of 1-3/4" and thickness of 1/8". This product is manufactured in the United States and meets the ASTM A513/5 1020 DOM seamless specification. The brand of this item is DOM Steel Round Tube 1-3/4" OD x .125 Wall A513/5 and it is perfect for use in CNC, metalworking, manufacturing, and industrial applications.