5pcs High Speed Steel Center Drill Bits Set Diverse Degree Angle for Lathe Machines Metalworking

【MAJOR FUNCTIONS】These center drill bits are used in metalworking to provide a starting hole for a larger-sized drill bit 【WIDELY APPLICATED】They can also be used to a conical indentation in the end of a workpiece in which to mount a lathe center ADAMANT 】The center drill is made from high speed steel these center drill bits are of high hardness and good wear resistance 【MEET DIFFERENT NEEDS】There are total 5 pieces center bits in this set that can be used to drill holes in different sizes 【SMOOTH PROCESSING】The drill bits are widely used on lathe machines these center drill bits can cut easily and remove chips smoothly.