19 Piece HSS-R Metal Drill Bit Set Titanium. Metal Drill Bit particulary flexible and resistant to breakage. For use with most metals, both ferrous and non-ferrous. Longlife and precision jobber drill bits. Shank equal to drill bit diameter and rolled spiral flute with ground point, vapour-plated. Two-cutter, cylindrical, with two flutes. Titanium coating for more durabe. Kit Consist: 1/1.5/2/2.5/3/3.5/4/4.5/5/5.5/ 6/6.5/7/7.5/8/8.5/9/9.5/10 mm.