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in addition to standard hexagonal and square holes
problems such as cracking and fracture during use are not covered (electric hand drill is prohibited)
Innovative Design: The 3D cutting edge allows for smoother penetration into materials
and superior oxidation resistance
3 D4 5 50 4T 2R0
BB 200mm Length Coated Carbide Drill Machine Metal Hole Making Tool for Steel Stainless Steel(4.0~20.0mm) Hole Diameter:10.0 in addition to standard hexagonalBB 200mm Length Carbide Drill Designed for Deep Hole Machining: Powerful Cutting Performance, Durable and Rigid. BB2055 Series: TiSiN Coating, Suitable for Mild Steel Material Hardness: HRC < 40 Point Angle: 120 BB2055 TiSiN HRC < 40 120 Brand Name(): BB Origin(): Mainland China() is_customized(): YES Model Number(): BB2055 DIY Supplies(DIY): Metalworking Type(): Twist Drill Bit() Use(): Metal Drilling() Dia. of Cut: 4. 0mm 20. 0mm Precision Measured,