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Cobalt Twist Drill Bits 5 2Mm Review

1

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Terrible

Revainrating 1 out of 5  
Rating 
1.0
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Description of Cobalt Twist Drill Bits 5 2Mm

Drilling in tough metal, including heavy-duty abrasive alloy metal drilling on hardened steel. High Quality Material. High Speed Steel Cobalt M35 Cobalt Steel Best Material. High Efficiency In Drilling Metals, and Stainless Steel. Reduce the processing cost per hole. Real 13/64". 13/64" equals to 5.16mm. Exact size is 5.16mm, tolerance 0.02mm, we rounding it up to 5.2mm. Please confirm the size before ordering.

Reviews

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Type of review

Revainrating 1 out of 5

Not suitable for steel.

If you want to drill something harder than aluminum, don't waste your money. I pierced 2 drill bits per 1 hole in 1/8 gauge mild steel with coolant.

Pros
  • Reduced cost per hole
Cons
  • old