5pcs High Speed Steel Center Drill Bits Set 60 Degree Angle 1.5/2/2.5/3/4mm Countersink Bit Tool

PRACTICAL: These center drill bits are used in metalworking to provide a starting hole for a larger-sized drill bit. GOOD PERFORMANCE: They can also be used to make a conical indentation in the end of a workpiece in which to mount a lathe center. HSS Made from high speed steel, these center drill bits are of high hardness and good wear resistance. 5 SIZES: There are total 5 pieces center bits in this set that can be used to drill holes in different sizes. WIDE APPLICATIONS: Widely used on lathe machines, these center drill bits can cut easily and remove chips smoothly.