Section 15 Base metals and articles of base metal 72 Iron and steel 72 28 Other bars and rods of other alloy steel; angles, shapes and sections, of other alloy steel; hollow drill bars and rods, of alloy or non-alloy steel. 72 28 10 Bars and rods, of high speed steel 72 28 10 00 Bars and rods, of high speed steel Commodity Code Description 72 28 10 00 000 Bars and rods, of high speed steel