5pcs HSS High Speed Steel Center Spotting Combined Countersink Spotting Drill Bits Set 60 Degree Angle Countersink 1.5/2.0/2.5/3.0/4.0mm

Features: 1. These center drill bits are used in metalworking to provide a starting hole for a larger-sized drill bit. 2. They can also be used to make a conical indentation in the end of a workpiece in which to mount a lathe center. 3. Made from high speed steel, these center drill bits are of high hardness and good wear resistance. 4. There are total 5 pieces center bits in this set that can be used to drill holes in different sizes. 5. Widely used on lathe machines, these center drill bits can cut easily and remove chips smoothly. Descriptions: – Set Of 5 High Speed Steel Center Drills. – Double End Of Each Drill. – Make a Conical Hole For a Lathe Center. – Suitable For: Ordinary Steel, Iron, Copper, Aluminum, Wood, Plastic Etc. – Size: 1) 5mm Body Diameter & 1.5mm Drill Tip Diameter 2) 5mm Body Diameter & 2.0mm Drill Tip Diameter 3) 6mm Body Diameter & 2.5mm Drill Tip Diameter 4) 8mm Body Diameter & 3.0mm Drill Tip Diameter 5) 10mm Body Diameter & 4mm Drill Tip DiameterUsage: Center and spotting drills are traditionally used to make a conical hole for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking. Used for producing center holds in components or work pieces with require machining between centersage Includes: 5 x Center Drill Bits Note: 1. When you use this drill bits, the material (eg. soft metal, mild steel, aluminum, acrylic plastic, and wood etc) temperature will get very high, please add some water or coolant to avoid the material get smoke when using it.