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DelitonGude Cobalt Suitable Steels Stainless Review

3

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Very good

Revainrating 4 out of 5  
Rating 
4.0
🪚 Industrial Drill Bits, 🔪 Cutting Tools

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Description of DelitonGude Cobalt Suitable Steels Stainless

Great product and very good quality. Made from M35 Hight-speed Steel and 5% Cobalt.Size:7.0mm,Total lengh:4.33inch,Work lengh:2.75inch. The blades are very sharp and they drill into metal fast.Including Steels,Cast Iron ,Copper,Galvanized Pipe,Aluminum Alloy,Wood, Plastic and Other Hard Metals.If drilling hard metal, Highly recommended use drilling press and control RPM.Not for Glass or Ceramic Materials. Full-grinding Nitriding,Good Wear resistance,Durable,Spiral groove design, well chip removal performance.135 Tip & Twist Design,Increases cutting speed with self-centering and prevents walking. For Professional and DIY Use, household maintenance and repair.These are so good to save times. Works great and good price, Will be a good assistant in your work.

Reviews

Global ratings 3
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Type of review

Revainrating 5 out of 5

Good product good case

I bought these bits to drill rough holes to final size for tapping aluminum panels. The one I used works pretty well. The case they came in was a pleasant surprise. This holds the bus together pretty well and provides easy access to them.

Pros
  • Excellent overall
Cons
  • Doubtful

Revainrating 5 out of 5

Works great even on hard to drill metals

I use these to drill hard drives before recycling. Sometimes I get old drive cases made out of a heavy-duty aluminum alloy, rather than the cheaper aluminum most drives are made out of today. Bits still work great, just drill a little slower. Highly recommended.

Pros
  • This is amazing
Cons
  • Some bugs

Revainrating 2 out of 5

Didn't do the job for me.

These are cheap bits that aren't sharp enough to cut through the steel material I'm working with. I've used other beats with much better luck. I use 3.5mm a lot more than the other sizes so I decided to try them as the price was reasonable. They leave almost no dents on the steel. It was worth trying, but it was one of those money-saving efforts that ended up costing more.

Pros
  • Sturdy construction
Cons
  • No automatic