---
product_id: 281462805
title: "12mm x 2pcs M42 8％ Cobalt Drill Bits for Stainless Steel and Hard Metal"
brand: "stroton"
price: "$57"
currency: NZD
in_stock: true
reviews_count: 8
url: https://www.desertcart.nz/products/281462805-12mm-x-2pcs-m42-8-cobalt-drill-bits-for-stainless
store_origin: NZ
region: New Zealand
---

# 3-5x faster cutting 12mm diameter 68-70 HRC hardness 12mm x 2pcs M42 8％ Cobalt Drill Bits for Stainless Steel and Hard Metal

**Brand:** stroton
**Price:** $57
**Availability:** ✅ In Stock

## Summary

> 🔧 Drill Like a Pro—Elevate Your Craftsmanship!

## Quick Answers

- **What is this?** 12mm x 2pcs M42 8％ Cobalt Drill Bits for Stainless Steel and Hard Metal by stroton
- **How much does it cost?** $57 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/281462805-12mm-x-2pcs-m42-8-cobalt-drill-bits-for-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

- • **Unmatched Durability:** Crafted from premium M42 8% cobalt steel for superior heat and wear resistance.
- • **Precision Engineering:** 135-degree split point design ensures effortless penetration and reduced walking.
- • **Versatile Performance:** Ideal for stainless steel, hard metals, aluminum, and plastic—perfect for any project.
- • **Innovative Chip Removal:** Sharp edges create long strips of iron chips, enhancing your drilling experience.
- • **Cost-Effective Efficiency:** Achieve the lowest cost per hole with a drill bit that outlasts the competition.

## Overview

The 12mm x 2pcs M42 8% Cobalt Drill Bits are engineered for professionals seeking unparalleled performance in stainless steel and hard metal applications. With a Rockwell hardness of 68-70 HRC, these bits offer exceptional heat and wear resistance, ensuring a longer tool life. The innovative 135-degree split point design allows for faster cutting speeds, making them a cost-effective choice for high-volume drilling tasks.

## Description

12mm x 2pcs M42 8％ Cobalt Drill Bits for Stainless Steel and Hard Metal

## 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.
- Includes :M42 Cobalt drill bit 12mm x 2 (length:15.1cm) 135 Degree Split Point

## Product Details

- **Material:** Cobalt
- **Cutting Diameter:** 12 Millimeters
- **Finish Type:** Hardened
- **Shank Type:** Straight
- **Cutting Angle String:** 135 Degrees

## Images

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

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Shredded Metal
*by J***Y on April 20, 2025*

Searching for a good drill bit I found these that are made with Cobalt in them. I tried my bits at home and realized they just weren't cutting. I saw all of the great comments and gave these a try. They worked. The only thing is yes they can break and will break if you bend them or work them really hard. I used tap lubricant but I did not know that you don't want the bit to heat up too much because it shortens the lifespan. I was using this for something I should have used a saw to cut. I wanted to drill out a screw. This made it possible. I broke most of the bits but I got the job done. Look at the photo I attached that shows how the metal shredded off like grated cheese at low speed using a new sharp bit. It was so cool I had to take a photo to share. You see the hole in the screw and under it you see shreds of metal that fell below.

### ⭐⭐⭐⭐⭐ Three-step tip really makes a difference
*by J***S on June 14, 2025*

The three-step point is exceptionally useful for sheetmetal - I am drilling mostly 1/8 in to 1/4" mild steel. Very fast cutting action and minimal grabbing, no tearing, at breakthrough. Excellent product.

### ⭐⭐⭐⭐⭐ Great set with a small case design problem
*by J***D on November 14, 2024*

They deserve the good ratings they are receiving and I could have marked a star down for I had with issue with the case. It is a nicely designed case if you are not old and have fat fingers so I can't down grade there rating because I am old with fat fingers. I used the 1mm bit and in replacing it in the case, I let go of it before it was in the bottom hole. So it dropped down between the bit racks. The only way to retrieve it is to disassemble the case. It is designed not to come apart. In their desire to make a product withstand normal wear and tare, they melt over the ends of the pivot pins so they can't come out of the holes in the case. Not quite true, I could pry them out but worried the whole time I would break one as. the melted pivot ends up with different diameters.There are two solutions to this problem.. The easiest one it just be carful when you are replacing the small bits and don't let go of it until you are sure it is in the bottom hole. The second one never excites a manufacturer, modify your pivot points tooling. Add a sphere to the end just slightly larger than the mating hole. This allows for disassembly. You would save several seconds of labor by not melting the ends over and it would always be the same fit for removal. Probably the labor savings wouldn't cover the tool change cost. Well maybe it would if your ROI is 50 or 60 years.

## 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 New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-20*