What Kind Of Exercise Is This? It Consists Of A Head, A Drill Body And A Drill Rod. The Head Includes A Head Outer Circle, A Sinker Cutting Edge, A Main Cutting Edge And A Screw Point. The Diameter Of The Outer Circle Of The Head Is Slightly Larger Than The Diameter Of The Drill Body, And The Sinker Blade Is Located On The Head . À The Extremity Front Of The Outer Circle, The Major Cutting Edge Is At The Root Of The Screw Point And Perpendicular To; The Axis Of The Drill, And The Point Of The Screw Is At The Extremity Front Of The Drill. Its Shape Is A Straight Cone, Giving It The Advantages Of Rational Structure, Smooth And Easy Holes, High Efficiency, Smooth Hole Wall After Drilling, And Smooth Removal. Coated Drill Bit Of Titanium With Sharpened Drill - Easy To Use. Use A Good Set Of Drill Bits, Well Machined. And Sharpened Even In Hard Wood, Plastic And Aluminum Alloy Materials, Can Be Used In A Drill Press. Hand Or A Drill. Specification Material: 65 Carbon Steel Length: 230Mm Diameter: 6Mm, 8Mm, 10Mm, 12Mm, 14Mm Suitable: Drill Bit Or Table Drill Note : 1. When Using These Drills, The Temperature Of The Material (E.G. Aluminum Alloy, Wood, Plastic, Etc.) Becomes Very High. Please Add Water Or Coolant To Prevent The Material From Emitting Smoke When In Use. 2. The Speed Should Not Be Too Fast, Otherwise Easy To Drive; Smoking, Charred Etc 3. Please Allow 1-3Mm Error Due To Manual Measurement. Thank You For Your Understanding. Delivery: 5 X Snake Drill