HSS (HSS-CO) Taper shank twist drills 1, We can provide various sizes of taper shank twist drills 2, We also can produce special specification of twist drills according to your requirements. More details can be got in our website, or you can contact us.Our company also has the capability of producing any new tool steel and die steel according to the requirements of producing various kinds of cutting tools, cutleries and dies.......