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πŸ”© cobalt hymnorq: highly resistant stainless steel logo

πŸ”© Cobalt Hymnorq: Highly Resistant Stainless Steel Review

3

Β·

Very good

Revainrating 4.5 out of 5Β Β 
RatingΒ 
4.3
πŸͺš Industrial Drill Bits, πŸ”ͺ Cutting Tools

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Description of πŸ”© Cobalt Hymnorq: Highly Resistant Stainless Steel

COBALT STEEL - Manufactured from M35 cobalt steel, with molybdenum and cobalt added to create a hardened heat-resistant alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, with up to twelve times compared with an average HSS drill bit. 40PC FRACTIONAL INCH BITS - The set includes 40pcs of M35 cobalt steel twist drill bits, 3/64" x 10pcs, 1/16" x 10pcs, 5/64" x 10pcs, and 3/32" x 10pcs. Manufactured to German DIN338 standard. Packed in a plastic bag. FOR METALWORKING - Particularly successful in cutting through hard metals(hardness less than HRC38Β°) such as stainless steel and cast iron, although they can be used for softer materials like copper and aluminium, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate. DOWNLOADABLE USER GUIDE - We've summed up some tips of drilling metals, including a RPM chart for several common metals, based on our reviews and some articles on the internet. In most cases, our customers would get a much better result with these tips. Welcome to download. LENGTH OF THE BITS: 3/64(1.73"), 1/16(1.89"), 5/64(2.01"), 3/32(2.24").

Reviews

Global ratings 3
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Type of review

Revainrating 3 out of 5

Yes, humans are small.

A lot of negative reviews here are related to size. I don't know if people know what 32 inches is but yes they are small. I ordered metric because I specifically needed a 2.5mm drill bit (again for those who don't know how small millimeters are, if the description makes it clear. Maybe they shouldn't buy those specific drill bits at all. ). The packages the beats came in weren't stamped, which isn't too hard for me to figure out which is which, but it would help the review a bit. The main…

Pros
  • Drill bit
Cons
  • Line is shorter than other picks

Revainrating 5 out of 5

Smaller quality bits are hard to find

Will get a next size up set as these have worked. Measurements show that these are smaller bits. It just doesn't fit my head how someone can buy drills just by the picture and without considering what they're drilling into. Usually you have to trade off smaller quality drilling than if you were only drilling balsa wood. Here, in terms of value for money, hardness and sharpness, which would be more fragile depending on the size, I cannot reproduce in a large store. The fact that there are…

Pros
  • Power Tool Parts & Accessories
Cons
  • Thin

Revainrating 5 out of 5

Size matters. Read description before purchasing

These drill bits work great and are as advertised. If you are looking for larger diameter bits then I would recommend reading the product description before purchasing. I can only imagine the same people buying shoes. lol. I use these bits in my countersinks. flat surface on the shank of one of the interchangeable bits and insert it into the countersink. Clamp the hex head screw onto the flat of the shaft for a secure fit. I drill almost everything with these nozzles. They are fragile and will…

Pros
  • Twist Drill Bit
Cons
  • Not sure