Description of Precision 60 Degree HSS Center Drill Bit Set For Metal Lathe Milling - Includes 5 Drill Countersink Tooling Set
Using 6542 High Speed Steel, High Hardness, Rustproof, Solid, Durable And Excellent for Use. Hardened And Hardened, High Hardness, Wear Resistance, Accurate Positioning, Good Chip Removal Effect, High Efficiency, And Higher Practical Life. The Reasonable Design Of A Large Helix Angle Of 60 Degrees Increases The Chip Evacuation And Facilitates High-Speed Operation To Accelerate Chip Evacuation. 60° Countersink Angle Fits All Standard Centers, Used For Centering Work Ends, Where The Work Piece Is To Be Revolved On Machine Centers. Center And Spotting Drills Are Used To Make A Conical Hole For A Lathe Center In Order To Make A Starting Point For A Standard Twist Drill.