Feature
●MATERIAL: M42 8% Cobalt Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life.
●SIZE : Metric 7.7mm , 3 Steps Desigh for Cutting through Stainless Steel,Hard Metals,Aluminum,Plastic
●PACKAGE: 5pcs Each pack,This Cobalt Drill Bit is Typically Capable of Running Three to Five Times Faster.So It Can Produce Many More Holes.
●HRC: 67-70HRC, The Sufficiently Sharp Bit Edge Can Cut the Metal Material into Long Strips of Iron Chips rather than Slowly Grinding Throng the Material with a Blunt Drill Bit.
●FEATURES:With a cobalt content of 8%, cobalt improves the bits high-temperature and abrasive resistance. Stainless steel is usually machined with the M42 bit for small size drill bits because the M42 bit has higher strength, higher hardness, better toughness and is less likely to break. Its the best material in the drill!
Description
HUAZHICHUN 5PCS SIZE 7.7mm,M42 8% Cobalt,drill bits for metal,Metal Drill Bit Set for Hard Metal, Stainless Steel, Cast Iron
Information
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use
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Widely used in stainless steel, die steel, aluminum alloy, cast iron, copper, galvanized pipe
Such as metal material punching
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Features
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High hardness, wear resistance, positioning, good chip removal, high efficiency
Professional bit
High hardness
High hardness, strong wear resistance, specially made stainless steel
advanced technique
Precision grinding process
Smooth surface, high grinding precision
Sharp and durable
135° standard double rear edge Angle
Full grinding drill, sharp and durable knife edge, stable feed
Wide range of USES
- stainless steel
- die steel
- aluminum alloy
- cast iron
- Copper
- galvanized pipe
Select high hardness material containing drill
Quenched plated drill more wear resistant, bring more durable work experience
Helical chip removal design
The spiral design is more rapid for drilling and chip removal
Universal handle type, widely used, clamping and fastening, smooth surface, high grinding precision
