---
product_id: 285838342
title: "M42 8％ Cobalt Twist Drill Bits (12mm x 2PCS) for Stainless Steel and Hard Metal"
brand: "stroton"
price: "4689 kr"
currency: ISK
in_stock: true
reviews_count: 8
category: "Stroton"
url: https://www.desertcart.is/products/285838342-m42-8-cobalt-twist-drill-bits-12mm-x-2pcs-stainless
store_origin: IS
region: Iceland
---

# 3-step split point design for faster, precise drilling 68-70 HRC Rockwell Hardness for superior heat resistance M42 8% Cobalt Steel for extreme durability M42 8％ Cobalt Twist Drill Bits (12mm x 2PCS) for Stainless Steel and Hard Metal

**Brand:** stroton
**Price:** 4689 kr
**Availability:** ✅ In Stock

## Summary

> ⚡ Drill Smarter, Not Harder — Own the Toughest Jobs with STROTON M42!

## Quick Answers

- **What is this?** M42 8％ Cobalt Twist Drill Bits (12mm x 2PCS) for Stainless Steel and Hard Metal by stroton
- **How much does it cost?** 4689 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/285838342-m42-8-cobalt-twist-drill-bits-12mm-x-2pcs-stainless)

## Best For

- stroton enthusiasts

## Why This Product

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

## Key Features

- • **Speed Meets Strength:** Capable of running 3-5x faster than standard bits without compromising tool life.
- • **Unmatched Durability:** Premium M42 cobalt steel ensures long-lasting performance even under intense heat and wear.
- • **Precision Engineering:** 3-step split point tip eliminates walking and starts drilling immediately with less force.
- • **Versatile Cutting Power:** Effortlessly drills through stainless steel, hard metals, aluminum, and plastics.
- • **Cost-Effective Excellence:** Lower cost per hole thanks to extended bit life and superior chip removal.

## Overview

The STROTON M42 8% Cobalt Twist Drill Bits (12mm, 2pcs) are engineered for professionals demanding precision and durability. Featuring premium cobalt steel with a 68-70 HRC rating, these bits excel in heat and wear resistance, enabling 3-5x faster drilling through stainless steel and hard metals. The innovative 3-step split point design ensures immediate, stable starts and clean chip removal, reducing effort and extending tool life. Ideal for millennial managers who value efficiency and quality, this set delivers unmatched performance and cost-effectiveness on every project.

## Description

Product Advantages: (1) 3 Steps desigh tip starts drilling immediately with less force and eliminates "walking" across the work surface. (2) Holds up better than generic high-speed steel,Cobalt gives high-speed steel more heat and wear resistance. (3) This drill bits set is made of Premium Cobalt (80,000 dollars per ton).(4) The M42 metric cobalt drill bits can cut through Stainless steel and Hard metal,Hard wood, although they can be used for softer materials such as Aluminum,Plastic. Some Important Tips about drilling stainless steel and hard metal: (1)Controling the drill speed from 200 to 1000 RPM would make it easier for you to drill holes on stainless steel. ________________________________ Stainless Steel ____________________________ Drill diameter RPM ____________________________ ≤5mm 1000~700 ____________________________ 5-10mm 700~350 ____________________________ 10-15mm 350~200 ________________________________ (2)Add stainless steel tapping oil or engine oil to prevent the stainless steel from overheating and forming a very hard oxide layer.It also works adding some vinegar,soy sauce or water if you don't have engine oil.

Review: Good quality - Very good quality
Review: Very good drill bits - Great drill bits. They cut through stainless steel very nicely if you take your time and use a cutting fluid to keep them cool. Had a minor issue with one of the bits snapping (my fault) but the seller took care of the issue immediately and was very responsive.

## Features

- Premium M42 8% Cobalt Steel ,68-70 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life.
- 3 Steps Desigh for Cutting through Stainless Steel,Hard Metals,Aluminum,Plastic.
- This Cobalt Drill Bit is Typically Capable of Running Three to Five Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes.
- The Sufficiently Sharp Bit Edge Can Cut the Metal Material into Long Strips of Iron Chips rather than Slowly Grinding Throng the Material with a Blunt Drill Bit.
- 2Pcs 135 Degree Split Point Drill Bits Includes :12mm(length:15.1cm)x2

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B081Z8GW47 |
| ASIN  | B081Z8GW47 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #844 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3 in Jobber Drill Bits |
| Customer Reviews | 4.4 4.4 out of 5 stars (4,324) |
| Customer reviews | 4.4 4.4 out of 5 stars (4,324) |
| Date First Available | 13 January 2021 |
| Date First Available  | 13 January 2021 |
| Finish | Hardened |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 454 g |
| Item model number | M42 Cobalt-8 |
| Item model number  | M42 Cobalt-8 |
| Manufacturer | WnewTools Ltd |
| Manufacturer  | WnewTools Ltd |
| Material | Cobalt |
| Measurement System | Metric |
| Number Of Pieces | 2 |
| Package Dimensions | 18.29 x 10.16 x 2.03 cm; 453.59 g |
| Package Dimensions  | 18.29 x 10.16 x 2.03 cm; 453.59 g |
| Part number | M42 Cobalt-8 |
| Pattern | 12mm (Pack of 2) |

## Product Details

- **Cutting angle string:** 135 Degrees
- **Cutting diameter:** 12 Millimeters
- **Finish type:** Hardened
- **Material:** Cobalt
- **Shank type:** Straight

## Images

![M42 8％ Cobalt Twist Drill Bits (12mm x 2PCS) for Stainless Steel and Hard Metal - Image 1](https://m.media-amazon.com/images/I/51soMoU3ZcL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality
*by J***I on 20 December 2025*

Very good quality

### ⭐⭐⭐⭐⭐ Very good drill bits
*by B***E on 11 July 2025*

Great drill bits. They cut through stainless steel very nicely if you take your time and use a cutting fluid to keep them cool. Had a minor issue with one of the bits snapping (my fault) but the seller took care of the issue immediately and was very responsive.

### ⭐⭐⭐⭐⭐ Very high quality drills
*by C***S on 30 November 2023*

I am a metal worker for 23 years, hard to find any better cobalt drills. Highly recommended.

## Frequently Bought Together

- STROTON 12mm x 2pcs M42 8％ Cobalt Drill Bits for Stainless Steel and Hard Metal
- Tap Magic 30004P ProTap Cutting Fluid, 4 oz. Size
- Forney 20857 Tap Magic Industrial Pro Cutting Fluid, 4 oz

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-03-09*