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calculated in inches
so it is not necessary to achieve a high drilling rate
But it also makes it easier to break
Our store offers a variety of cutting tools with different blade diameters
Buy 10 get 5% off！Buy 20 get 10% off
BB Step Drill 90 Degree 180 CNC Precision Solid Carbide Drilling Tools DLC Coated Screw Hole Hole Diameter:5.0x6xD8x10x60 calculated in inchesExample 1x5xD4x10x50 d=1mm, L1=5mm,D2=4mm,L2=10mm,Overall Length=50mm Once Formed Drilling+Chamfering The blade edge is sharp without burrs, easy chamfering Greatly improves work efficiency. Solid Carbide Bars High Hardness High Wear Resistance A specialized tool for high hardness and high speed cutting applications with higher wear resistance and strength Nano Diamond Coating Enhance tool hardness and service life, improve machine tool productivity,