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Metric Cobalt Twist Stainless 1Mm 10Mm Review

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Average

Revainrating 3.5 out of 5  
Rating 
3.7
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Description of Metric Cobalt Twist Stainless 1Mm 10Mm

Premium M42 8% Cobalt Steel ,68-70 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life. 3 Steps Desigh for Cutting through Stainless Steel,Hard Metals,Aluminum,Plastic. This Cobalt Drill Bit is Typically Capable of Running Three to Five Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes. 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. 19Pcs 135 Degree Split Point Drill Bits Includes :1mm(length:3.4cm) 1.5mm 2mm 2.5mm 3mm 3.5mm 4mm 4.5mm 5mm(length:8.5cm) 5.5mm 6mm(length:9cm) 6.5mm 7mm 7.5mm 8mm(length:11.5cm) 8.5mm 9mm 9.5mm 10mm(length:13cm) [DIA 0.5mm Increments] .

Reviews

Global ratings 3
  • 5
    2
  • 4
    0
  • 3
    0
  • 2
    0
  • 1
    1

Type of review

Revainrating 1 out of 5

They work as intended. No questions.

I work at a processing plant and we are constantly doing repairs/maintenance and need to make changes as needed. These drills do exactly what we expect. I will buy again if necessary.

Pros
  • Twist Drill Bit
Cons
  • Contact Seller

Revainrating 5 out of 5

Not suitable for stainless steel

Reportedly capable of drilling stainless steel. They struggled to drill a hole in 10mm polished stainless steel. They may work well with other material, I'm not sure. I bought them because of the stainless steel. Was not satisfied with these drills. Waste of money in my opinion.

Pros
  • Power tools and hand tools
Cons
  • 0

Revainrating 5 out of 5

They're cheap for some reason, but still not worth it.

I bought this kit because it was metric and average priced. I drilled a thing. 1 thing. It had already been pilot drilled on a drill press at the appropriate speed with cutting oil and the part was held in a vise. He immediately chipped 2 outer cutting edges. Now one of my drills is useless.

Pros
  • Electric Drill Parts and Accessories
Cons
  • Nothing