---
product_id: 736125928
title: "10-Piece M35 Cobalt Steel Drill Bit Set for Metals, 4.2mm Metric, Fully Ground, 135° Split Point, Bronze Finish, DIN338 Standard, in Tough Transparent PP Case"
brand: "hymnorq"
price: "¥3818"
currency: JPY
in_stock: true
category: "Hymnorq"
url: https://www.desertcart.jp/products/736125928-10-piece-m35-cobalt-steel-drill-bit-set-for-metals
store_origin: JP
region: Japan
---

# 135° split point reduces heat & walking M35 cobalt steel for max durability DIN338 standard for pro-grade precision 10-Piece M35 Cobalt Steel Drill Bit Set for Metals, 4.2mm Metric, Fully Ground, 135° Split Point, Bronze Finish, DIN338 Standard, in Tough Transparent PP Case

**Brand:** hymnorq
**Price:** ¥3818
**Availability:** ✅ In Stock

## Summary

> 🔩 Drill Like a Pro, Finish Like a Boss!

## Quick Answers

- **What is this?** 10-Piece M35 Cobalt Steel Drill Bit Set for Metals, 4.2mm Metric, Fully Ground, 135° Split Point, Bronze Finish, DIN338 Standard, in Tough Transparent PP Case by hymnorq
- **How much does it cost?** ¥3818 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/736125928-10-piece-m35-cobalt-steel-drill-bit-set-for-metals)

## 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

- • **Compact & Organized:** Tough transparent PP case keeps your bits secure, visible, and ready to go wherever you work.
- • **Perfect Fit & Finish:** 4.2mm diameter with chamfered straight shanks ensures seamless tool compatibility and corrosion resistance.
- • **Unmatched Durability:** Crafted with 5% cobalt M35 steel to withstand intense heat and heavy use without dulling.
- • **Precision Engineering:** Fully ground bits with dual twist flutes and a 135° split point for smooth, accurate drilling every time.
- • **Versatile Metal Mastery:** Optimized for stainless steel, brass, aluminum, and more—plus wood and plastic for all your projects.

## Overview

This 10-piece M35 cobalt steel drill bit set delivers professional-grade performance with superior heat resistance and precision. Featuring a 135° split point and fully ground dual twist flutes, these 4.2mm bits excel on metals, wood, and plastics. Packaged in a durable transparent case, they meet DIN338 standards for reliability and ease of use—perfect for managers who demand efficiency and quality in every project.

## Description

Upgrade your drilling experience with this premium 10-piece drill bit set. Crafted from high-performance M35 cobalt steel (5% cobalt), these drill bits are designed for superior durability, heat resistance, and precision. Featuring a dual twist flute and a 135° split point, these bits ensure smooth drilling and reduced walking on metal, wood, and plastic surfaces. The set includes: Size: 4.2mm metric diameter Construction: Fully ground for optimal cutting efficiency Shank Design: Straight with chamfered ends for easy tool fitting Flute Length: 44mm, Total Length: 74mm Finish: Bronze hue for corrosion resistance and a sleek look Compliant with DIN338 standards, these drill bits come in a tough, transparent PP plastic case for secure storage and portability. Perfect for professional and DIY applications, this set delivers exceptional performance and reliability.

## Features

- Premium Material: Made of M35 cobalt steel (5% cobalt) for exceptional durability, heat resistance, and precision drilling.
- Optimized Design: Fully ground with dual twist flute, 135° split point, and straight shank with chamfered end for smooth, accurate, and stable drilling.
- Versatile Application: Ideal for drilling in metal, wood, and plastic, meeting DIN338 standards for professional-grade performance.
- Perfect Dimensions: 4.2mm metric diameter, 44mm flute length, and 74mm total length, ensuring compatibility with various drill machines.
- Convenient Storage: Comes in a tough transparent PP plastic case for easy organization, portability, and protection.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07CN2J51P |
| ASIN  | B07CN2J51P |
| Brand Name | HYMNORQ |
| Customer Reviews | 4.3 4.3 out of 5 stars (78) |
| Customer reviews | 4.3 4.3 out of 5 stars (78) |
| Cutting Angle String | 135 Degrees |
| Cutting Diameter | 4.2 Millimeters |
| Date First Available  | 19 March 2021 |
| Finish Types | Bronze |
| Included Components | 10 pieces of 4.2mm cobalt drill bits |
| Is Discontinued By Manufacturer  | No |
| Item model number  | LZXGY0131US |
| Manufacturer | Hymnorq |
| Manufacturer  | Hymnorq |
| Material Type | Cobalt |
| Minimum Bore Diameter | 4.2 Millimeters |
| Model | LZXGY0131US |
| Number of Flutes | 2 |
| Number of Pieces | 10 |
| Package Dimensions  | 10.5 x 6.4 x 0.9 cm; 85 g |
| Part Number | LZXGY0131US |
| Point Style | split |
| Shank Type | Straight |
| Surface Recommendation | Stainless Steel, Brass, Copper, Iron, Aluminum Alloy, Angle Steel, Cast Iron, Wood, Plastic |
| Tool Flute Type | Spiral |
| UPC | 666389312495 |
| Unit Count | 10 Count |

## Product Details

- **Cutting angle string:** 135 Degrees
- **Cutting diameter:** 4.2 Millimeters
- **Finish type:** Bronze
- **Material:** Cobalt
- **Shank type:** Straight

## Images

![10-Piece M35 Cobalt Steel Drill Bit Set for Metals, 4.2mm Metric, Fully Ground, 135° Split Point, Bronze Finish, DIN338 Standard, in Tough Transparent PP Case - Image 1](https://m.media-amazon.com/images/I/6130HSulq3L.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, absolutely! These drill bits feature a universal straight round shank. They are fully compatible and will lock securely into the standard chucks of almost all portable cordless drills, corded power hand drills, and drill presses.

**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 center punch needed. They feature a 135° split point that provides immediate self-centering. This prevents walking or slipping on hard metals like stainless steel, allowing you to start your hole precisely and directly every time.

**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.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-16*