---
product_id: 63712875
title: "15-Piece M35 Cobalt Drill Bit Set, Metric 1.5 to 10mm, 5% Cobalt HSS for Drilling Hard Metal Stainless Steel Cast Iron, Fully Ground Jobber Length Bits with 135° Split Point Tough Indexed Case"
brand: "hymnorq"
price: "฿2754"
currency: THB
in_stock: true
reviews_count: 13
category: "Hymnorq"
url: https://www.desertcart.co.th/products/63712875-15-piece-m35-cobalt-drill-bit-set-metric-1-5
store_origin: TH
region: Thailand
---

# Dual Twist Flute - Rapid chip removal & cooler drilling 135° Split Point - Self-centering for precision starts M35 Cobalt Steel - 5% Cobalt for extreme durability 15-Piece M35 Cobalt Drill Bit Set, Metric 1.5 to 10mm, 5% Cobalt HSS for Drilling Hard Metal Stainless Steel Cast Iron, Fully Ground Jobber Length Bits with 135° Split Point Tough Indexed Case

**Brand:** hymnorq
**Price:** ฿2754
**Availability:** ✅ In Stock

## Summary

> 🔧 Drill Like a Pro, Finish Like a Boss

## Quick Answers

- **What is this?** 15-Piece M35 Cobalt Drill Bit Set, Metric 1.5 to 10mm, 5% Cobalt HSS for Drilling Hard Metal Stainless Steel Cast Iron, Fully Ground Jobber Length Bits with 135° Split Point Tough Indexed Case by hymnorq
- **How much does it cost?** ฿2754 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/63712875-15-piece-m35-cobalt-drill-bit-set-metric-1-5)

## Best For

- hymnorq enthusiasts

## Why This Product

- Trusted hymnorq brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Metric Range:** 15 essential sizes from 1.5mm to 10mm cover all your metalworking, automotive, and DIY needs with one sleek, organized kit.
- • **Rugged On-the-Go Storage:** Heavy-duty indexed ABS case with rubberized corners keeps your bits secure, organized, and ready for any job site hustle.
- • **Unmatched Heat Resistance:** Premium M35 cobalt steel composition ensures your bits stay sharp and durable even under intense heat and abrasive conditions.
- • **Effortless Chip Evacuation:** Fully ground bits with dual spiral flutes reduce friction and heat buildup, delivering smoother, faster drilling sessions without burnout.
- • **Precision-Engineered Accuracy:** 135° split point design bites instantly, eliminating wandering and the need for pilot holes—perfect for flawless, professional results every time.

## Overview

The Hymnorq 15PC M35 Cobalt Drill Bit Set features premium 5% cobalt high-speed steel bits with a precision 135° split point for self-centering accuracy. Fully ground with dual twist flutes, these bits offer superior heat resistance and rapid chip removal, making them ideal for drilling tough metals like stainless steel, cast iron, and titanium alloys. The comprehensive metric set (1.5-10mm) comes housed in a rugged, impact-resistant case designed for easy size identification and portability, perfect for professionals and serious DIYers demanding reliability and precision.

## Description

We believe great tools shouldn’t cost a fortune. Since 2017, we’ve been creating reliable, high-quality drill bits and hand tools for makers, builders, and DIYers around the world. From wood and tile drill bits to cobalt bits, chucks, tube expanders, and tapping tools , every product is built to be tough, precise, and easy to use. Our mission is simple: to give you the right tools to get the job done—without compromise. We believe great tools shouldn’t cost a fortune. Since 2017, we’ve been creating reliable, high-quality drill bits and hand tools for makers, builders, and DIYers around the world. From wood and tile drill bits to cobalt bits, chucks, tube expanders, and tapping tools , every product is built to be tough, precise, and easy to use. Our mission is simple: to give you the right tools to get the job done—without compromise. Precision Tools, Built to Last Visit the Store Precision Tools, Built to Last Visit the Store

Review: Excellent set of METRIC bits! - At the time I purchased these, I only intended to use them for light duty (drilling into polymer). However, as fate would have it, I had to use them to drill into hardened steel, and much to my surprise, they performed admirably. It was a pleasant surprise (I was expecting "Chinese junk") and I'm very happy with this purchase; especially considering that it's a METRIC set, which is difficult to find (in the USA). I wish the set had a 1mm bit, but oh well. It's just a preference, not anything against the quality of the bits in this set. ============= Update 1/16/18 ============= My rating has changed from 5 stars down to 3. I needed to drill into metal again--actually I wasn't even drilling new holes, but just "chasing" already existing holes to expand them--and neither the 4.5mm or 4.8mm bits would do anything. They just spun around getting hot, without cutting anything. I even tried the 5mm bit, even though that was too big for my purposes, and it also did nothing but spin. Thus, I've used four of the bits (4, 4.5, 4.8, and 5mm), and only one of them did anything. The one that actually worked did its job well; the others are a HUGE disappointment. ============= Update 1/25/18 ============= Kudos to Migiwata customer service (thank you, Bella!). After hearing about my not-so-pleasant experience with these bits, they sent me a second set. Apparently their original supplier had run dry, and they had to use a second, temporary supplier while the original caught up with demand. The first set that I received was from the temporary supplier. The new set is from the original supplier, and the bits seem to be in order in this new set. So how do you tell the difference? By the case (see photos). The set with the blue dot on the case--which is a plastic retainer to keep the case closed--is from the original supplier. Now if you happen to get a set without the blue dot, don't panic. Just because I got a subpar set that slipped through the manufacturer's quality control process doesn't mean that you did, too. Try the bits out first. WORST case is that Migiwata customer service takes care of you like they did me; best case is you don't even have a problem. As for me and my review of this product, I'm a happy camper again and am bumping my rating back up to 5 stars. The bits are great (make sure to use a good cutting lubricant/coolant) and Migiwata customer service is stellar.
Review: Funny name, good drill bit. - You never know how good or bad a drill bit is going to be till you buy it and try it. Hymnorq M35 Cobalt drill bits have been the real deal for me. I've purchased multi-packs of larger daimeter and smaller diameter Hymnorq M35 Cobalt bits that have worked just as well as these 4.2mm bits. Hymnorq M35 cobalt bits are reasonably priced, cut fast, and stay sharp (I do try to take care of them regarding matching RPM to bit diameter and keeping cutting oil on the bits as much as possible). As long as I can continue to find this family of drill bits, I'll continue to replenish my toolboxes with them.

## Features

- TRUE M35 GRADE COBALT STEEL: Manufactured from premium High-Speed Steel containing 5% Cobalt (HSS-Co), these bits are heat-hardened to cut through tough abrasive materials. They offer significantly higher heat resistance and wear durability compared to standard HSS bits, making them the ultimate choice for drilling into stainless steel, cast iron, and titanium alloys.
- PRECISION 135° SPLIT POINT: Equipped with a 135-degree self-centering split point, these bits bite into the material immediately upon contact. This active cutting tip prevents "walking" or wandering across the work surface and eliminates the need for a pre-punch pilot hole, ensuring accurate and clean starts every time.
- FULLY GROUND & EFFICIENT: Unlike roll-forged alternatives, our bits are fully ground for precise dimension accuracy and concentricity. The precision-engineered dual twist flute design ensures rapid chip removal, effectively reducing friction and heat buildup for a smoother, cooler drilling process.
- 15PC METRIC SIZE COVERAGE: This comprehensive metric set includes 15 essential sizes: 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 8, 9, and 10mm. It is a versatile kit suitable for a wide range of projects in metalworking, automotive repair, and general DIY on wood, plastic, aluminum, and hard metals.
- HEAVY-DUTY INDEXED CASE: The bits are housed in a rugged, impact-resistant ABS plastic case with rubberized corners for extra protection. The case features a folding design with clearly marked size indexes (raised lettering) for easy identification, keeping your tools organized, secure, and ready for transport to any job site.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07B7L6WVY |
| Best Sellers Rank | #48,760 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #19 in Metalworking & Multipurpose Drill Sets |
| Brand | HYMNORQ |
| Brand Name | HYMNORQ |
| Customer Reviews | 4.4 out of 5 stars 2,537 Reviews |
| Cutting Angle String | 135 Degrees |
| Cutting Diameter | 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 8, 9, 10 Millimeters |
| Finish Type | Bronze |
| Finish Types | Bronze |
| Included Components | 15 pieces of metric cobalt drill bits |
| Item Dimensions | 5.91 x 4.33 x 1.57 inches |
| Manufacturer | Hymnorq |
| Material | Cobalt Steel |
| Material Type | Cobalt Steel |
| Model | B07B7L6WVY |
| Number of Flutes | 2 |
| Number of Pieces | 15 |
| Part Number | B07B7L6WVY |
| Point Style | Split Point |
| Set Name | 15PC Set |
| Shank Type | Straight |
| Surface Recommendation | Stainless Steel, Brass, Copper, Iron, Aluminum Alloy, Angle Steel, Cast Iron, Wood, Plastic |
| Tool Flute Type | Spiral |
| UPC | 666389162076 |
| Unit Count | 1 Count |

## Product Details

- **Cutting Angle String:** 135 Degrees
- **Cutting Diameter:** 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 8, 9, 10 Millimeters
- **Finish Type:** Bronze
- **Material:** Cobalt Steel
- **Shank Type:** Straight

## Images

![15-Piece M35 Cobalt Drill Bit Set, Metric 1.5 to 10mm, 5% Cobalt HSS for Drilling Hard Metal Stainless Steel Cast Iron, Fully Ground Jobber Length Bits with 135° Split Point Tough Indexed Case - Image 1](https://m.media-amazon.com/images/I/619gOKPCQ+S.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Can these drill bits cut through hardened steel or stainless steel?**
A: Yes. M35 grade steel with 5% Cobalt is specifically engineered for high-tensile metals like stainless steel, cast iron, and titanium alloys. For fully hardened steel (HRC > 50), carbide bits are recommended.

**Q: Will these bits fit my standard cordless drill?**
A: Yes. These feature standard round straight shanks. The largest diameter is 10mm, allowing them to fit securely into any standard 3/8-inch (10mm) or 1/2-inch (13mm) drill chuck.

**Q: Do I need to use cutting oil or lubricant?**
A: Highly recommended. While Cobalt is heat-resistant, using cutting fluid significantly reduces friction and heat buildup. This prevents the bit from annealing (softening) and greatly extends its lifespan.

**Q: Do these bits require a center punch to start?**
A: No. These bits feature a 135° Split Point tip. This design is self-centering and cuts immediately upon contact with the metal, preventing the bit from "walking" or skating across the surface.

**Q: Are these bits just coated with Cobalt or solid?**
A: They are solid M35 Cobalt steel throughout, not just coated. Unlike titanium-coated bits that lose effectiveness once sharpened, these maintain their heat resistance and performance even after resharpening.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent set of METRIC bits!
*by J***W on January 1, 2018*

At the time I purchased these, I only intended to use them for light duty (drilling into polymer). However, as fate would have it, I had to use them to drill into hardened steel, and much to my surprise, they performed admirably. It was a pleasant surprise (I was expecting "Chinese junk") and I'm very happy with this purchase; especially considering that it's a METRIC set, which is difficult to find (in the USA). I wish the set had a 1mm bit, but oh well. It's just a preference, not anything against the quality of the bits in this set. ============= Update 1/16/18 ============= My rating has changed from 5 stars down to 3. I needed to drill into metal again--actually I wasn't even drilling new holes, but just "chasing" already existing holes to expand them--and neither the 4.5mm or 4.8mm bits would do anything. They just spun around getting hot, without cutting anything. I even tried the 5mm bit, even though that was too big for my purposes, and it also did nothing but spin. Thus, I've used four of the bits (4, 4.5, 4.8, and 5mm), and only one of them did anything. The one that actually worked did its job well; the others are a HUGE disappointment. ============= Update 1/25/18 ============= Kudos to Migiwata customer service (thank you, Bella!). After hearing about my not-so-pleasant experience with these bits, they sent me a second set. Apparently their original supplier had run dry, and they had to use a second, temporary supplier while the original caught up with demand. The first set that I received was from the temporary supplier. The new set is from the original supplier, and the bits seem to be in order in this new set. So how do you tell the difference? By the case (see photos). The set with the blue dot on the case--which is a plastic retainer to keep the case closed--is from the original supplier. Now if you happen to get a set without the blue dot, don't panic. Just because I got a subpar set that slipped through the manufacturer's quality control process doesn't mean that you did, too. Try the bits out first. WORST case is that Migiwata customer service takes care of you like they did me; best case is you don't even have a problem. As for me and my review of this product, I'm a happy camper again and am bumping my rating back up to 5 stars. The bits are great (make sure to use a good cutting lubricant/coolant) and Migiwata customer service is stellar.

### ⭐⭐⭐⭐⭐ Funny name, good drill bit.
*by T***Y on March 4, 2024*

You never know how good or bad a drill bit is going to be till you buy it and try it. Hymnorq M35 Cobalt drill bits have been the real deal for me. I've purchased multi-packs of larger daimeter and smaller diameter Hymnorq M35 Cobalt bits that have worked just as well as these 4.2mm bits. Hymnorq M35 cobalt bits are reasonably priced, cut fast, and stay sharp (I do try to take care of them regarding matching RPM to bit diameter and keeping cutting oil on the bits as much as possible). As long as I can continue to find this family of drill bits, I'll continue to replenish my toolboxes with them.

### ⭐⭐⭐⭐ Decent budget bits, poorly made case.
*by D***. on September 1, 2025*

The bits themselves are OK, but definitely not on the higher end (also much lower price than high end bits). The case is poorly molded and low quality. Next time, I'd likely elect to buy a more expensive set.

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-06-15*