---
product_id: 597669368
title: "20PCS HSS Gold Cobalt Drill Bit, 3mm 4mm 5mm Twist Drill Bit for Stainless Steel Hard Metal Cast Iron Copper Aluminum Wood Plastic, Metric HSS Twist Cobalt Drill Bits Set"
brand: "carreuty"
price: "KSh5698"
currency: KES
in_stock: true
reviews_count: 8
category: "Carreuty"
url: https://www.desertcart.co.ke/products/597669368-20pcs-hss-gold-cobalt-drill-bit-3mm-4mm-5mm-twist
store_origin: KE
region: Kenya
---

# 135° self-centering tip for precision drilling Cobalt-infused HSS for ultimate durability Versatile sizes: 3mm, 4mm, 5mm for all projects 20PCS HSS Gold Cobalt Drill Bit, 3mm 4mm 5mm Twist Drill Bit for Stainless Steel Hard Metal Cast Iron Copper Aluminum Wood Plastic, Metric HSS Twist Cobalt Drill Bits Set

**Brand:** carreuty
**Price:** KSh5698
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 20PCS HSS Gold Cobalt Drill Bit, 3mm 4mm 5mm Twist Drill Bit for Stainless Steel Hard Metal Cast Iron Copper Aluminum Wood Plastic, Metric HSS Twist Cobalt Drill Bits Set by carreuty
- **How much does it cost?** KSh5698 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/597669368-20pcs-hss-gold-cobalt-drill-bit-3mm-4mm-5mm-twist)

## Best For

- carreuty enthusiasts

## Why This Product

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

## Key Features

- • **Complete Size Range:** Includes 10x 3mm, 5x 4mm, and 3x 5mm bits to tackle any task with the perfect fit.
- • **Pro-Level Efficiency:** Optimized for handheld, battery-powered, and pillar drills—engineered for professionals and DIY enthusiasts alike.
- • **Unmatched Durability:** Cobalt-enhanced high-speed steel resists wear and heat for long-lasting performance.
- • **Multi-Material Mastery:** Effortlessly drills through stainless steel, cast iron, aluminum, wood, plastic, and more—your all-in-one solution.
- • **Precision at Every Drill:** 135° self-centering tips eliminate walking and pre-drilling, delivering clean, accurate holes every time.

## Overview

This 20-piece drill bit set features cobalt-infused high-speed steel bits in 3mm, 4mm, and 5mm sizes, designed with 135° self-centering tips for precision and durability. Ideal for drilling through hard metals like stainless steel and cast iron, as well as softer materials like wood and plastic, this versatile set suits professional tradespeople and DIYers seeking reliable, efficient performance across a wide range of projects.

## Description

Features: 1. High Speed Steel: The twist drill bit is made of cobalt-containing high-speed steel, quenched at high temperature, and is wear-resistant and tough. 2. Professional Drill Bit: 135°self-centring tips, eliminates the need for pre-drilling or center punching, quickly penetrates the metal plate with less pressure, prevents walking, and removes chips and particles faster. 3. Metal Drilling Tool: High-speed steel twist drill bits are mainly used for cutting hard and soft metals and are ideal for drilling holes in stainless steel, aluminum, iron, copper, plastic, wood and metal plates. 4. Package Includes: 10PCS 3mm drill bits + 5pcs 4mm drill bits + 3pcs 4mm drill bits. Suitable for various electric drills, such as pillar drills, handheld electric drills, battery-powered drills, etc. 5. Instructions for use: When using, the drill bit should be perpendicular to the metal plate and kept cool. Pay attention to heat and speed control when drilling. Ideal for professionals, home improvement enthusiasts and DIY enthusiasts Specification: Color: silver+gold Material: cobalt-containing high-speed steel Product Size: 3mm + 4mm + 5mm Package include: 10pcs 3mm drill bits 5pcs 4mm drill bits 3pcs 4mm drill bits Please note: 1.Due to different screens, there may be slight differences in color. 2. Please allow 1mm-2mm difference due to manual measurement,and confirm the length again before order, thanks for your kindly understanding! 3. We will do our best to provide better products. Please contact us freely if need any assistance.

Review: Best yet - I used normal metal drill bits to drill out a lambretta lock but after two hours nothing to I got these omg within 10 minutes the lock was out with a little oil on the tip they cut through like butter would highly recommend theses
Review: Drill bits - Nice drill bits, better than some brand name drill bits but couldn’t crack the job I got them for.

## Features

- High Speed Steel: The twist drill bit is made of cobalt-containing high-speed steel, quenched at high temperature, and is wear-resistant and tough.
- Professional Drill Bit: 135°self-centring tips, eliminates the need for pre-drilling or center punching, quickly penetrates the metal plate with less pressure, prevents walking, and removes chips and particles faster.
- Metal Drilling Tool: High-speed steel twist drill bits are mainly used for cutting hard and soft metals and are ideal for drilling holes in stainless steel, aluminum, iron, copper, plastic, wood and metal plates.
- Package Includes: 10pcs 3mm drill bits + 5pcs 4mm drill bits + 3pcs 4mm drill bits. Suitable for various electric drills, such as pillar drills, handheld electric drills, battery-powered drills, etc.
- Instructions for use: When using, the drill bit should be perpendicular to the metal plate and kept cool. Pay attention to heat and speed control when drilling. Ideal for professionals, home improvement enthusiasts and DIY enthusiasts

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CP6R4ZRY |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 171,616 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,447 in Drill Bit Sets |
| Colour | silver+gold |
| Customer Reviews | 3.8 3.8 out of 5 stars (59) |
| Date First Available | 30 Nov. 2023 |
| Finish | Copper |
| Included components | Drill Bit Set |
| Item Weight | 100 g |
| Item model number | Drill Bit Set |
| Manufacturer | Carreuty |
| Material | Cobalt, High Speed Steel (HSS) |
| Package Dimensions | 10.1 x 7.1 x 2.2 cm; 100 g |
| Part number | Drill Bit Set 3 |
| Size | 3mm, 4mm, 5mm |

## Product Details

- **Brand:** Carreuty
- **Finish type:** Copper
- **Material:** Cobalt, High Speed Steel (HSS)
- **Shank type:** Round
- **Tool flute type:** Spiral

## Images

![20PCS HSS Gold Cobalt Drill Bit, 3mm 4mm 5mm Twist Drill Bit for Stainless Steel Hard Metal Cast Iron Copper Aluminum Wood Plastic, Metric HSS Twist Cobalt Drill Bits Set - Image 1](https://m.media-amazon.com/images/I/71hYkEmXY4L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best yet
*by M***K on 5 May 2025*

I used normal metal drill bits to drill out a lambretta lock but after two hours nothing to I got these omg within 10 minutes the lock was out with a little oil on the tip they cut through like butter would highly recommend theses

### ⭐⭐⭐⭐ Drill bits
*by K***N on 18 August 2025*

Nice drill bits, better than some brand name drill bits but couldn’t crack the job I got them for.

### ⭐ Not Hss/ Cobalt
*by G***S on 18 October 2025*

They are not good for metals might work on wood but definitely not HSS/COBALT

## Frequently Bought Together

- 20PCS HSS Gold Cobalt Drill Bit, 3mm 4mm 5mm Twist Drill Bit for Stainless Steel Hard Metal Cast Iron Copper Aluminum Wood Plastic, Metric HSS Twist Cobalt Drill Bits Set
- Meccion HSS Cobalt Jobber Drill Bit 5pcs 5.0mm Twist Drill Bit for Drilling Stainless Steel and Metal
- 5% Cobalt Drill Bit Set, M35 High Speed Steel Twist Drill Bits 135 Degree Split Point for Stainless Steel, Cast Iron, Hard Metal, Plastic and Wood(13Pcs)

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**Shop now:** [https://www.desertcart.co.ke/products/597669368-20pcs-hss-gold-cobalt-drill-bit-3mm-4mm-5mm-twist](https://www.desertcart.co.ke/products/597669368-20pcs-hss-gold-cobalt-drill-bit-3mm-4mm-5mm-twist)

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-03-04*