Home > Jobber Drill Bits > Hymnorq 12mm Metric Twist Drill Bit Set of 2pcs - Jobber Length Fully Ground Straight Shank – 5% Cobalt M35 Grade HSS-CO, Extremely Heat Resistant - Suitable for Stainless Steel Cast Iron

Hymnorq 12mm Metric Twist Drill Bit Set of 2pcs

Standard Drill Chucks, Extremely Heat Resistant Suitable, 5 % Cobalt M35 Grade Hss Co, 12Mm Metric Twist Drill Bit Set, Hardened Steel High Carbon Steel

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BVR Rating 575 reviews


  • Made with high-quality cobalt steel that offers a long-lasting usage
  • Features a RPM chart for several common metals that makes it easy to use
  • Comes in a plastic bag and a flat paper box that makes it easy to store


  • May not be ideal for steel

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Analysis of 500+ reviews for Hymnorq 12mm Metric Twist Drill Bit Set of 2pcs


BestViewsReviews analyzed 13,890 reviews for 30 products in the Jobber Drill Bits category.


We analyzed a total of 575 reviews for this product out of which, 460 reviews were received in the last 6 months.


The analysis indicates that around 74% reviews were positive while around 24% of reviews had negative sentiment.

BestViewsReviews Ranking and Score for Hymnorq 12mm Metric Twist Drill Bit Set of 2pcs


This product received a total score of 9.29 out of 10, based on review sentiments and user opinions related to 10 features:

  • Size
  • Value for money
  • Build quality
  • Efficiency
  • Design
  • Customer support
  • Compatibility
  • Overall satisfaction
  • Longevity
  • Easy to use
  • Users of this product said

    I am not sure how long the bits will hold their sharpness, since I used a new one to finish the hole in the second piece of tubing.

    I was impressed with the quality of this product, it looks like the people of Migiwata care about their products, after using them multiple times in the course of making a part from a block of 3/4" 6061-T6 aluminum.

    When I purchased these, I only intended to use them for light duty, but as fate would have it, I had to use them to drill into hardened steel, and they did an excellent job.

    The drill bit did not move off center as it was used to drill through the bolt and engine steel block.

    I was so impressed with the 7mm bits that I bought another set, they also worked well on stainless steel, and I think they last longer.

    Question & Answers


    What is the length of those?


    We measured the bits and found the length of the drill bit to be 100mm.


    I need to cut through a heat treated high carbon steel and these are good for it?


    It is possible to heat treat high carbon steel and hardened steel with Carbide bits.


    Sometimes drill bits break while drilling.


    The quality of the bit is poor and it can either heat up and snap or the point grabs and the bit twists and breaks.


    Is the m35 all one size or diff sizes like the 15pc cobalt set?


    The M35 cobalt set includes 13 pieces, all made by the same manufacturer.


    Is it possible for these to drill through cheddar or provolone without breaking?


    You can either keep the speed very low or chuck up a pit and poke at it.

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