---
product_id: 224044451
title: "4-32mm Metric 5% Cobalt Step Drill Bit for Stainless Steel and Hard Metal (15 Steps)"
brand: "stroton"
price: "S/.204"
currency: PEN
in_stock: true
reviews_count: 13
category: "Stroton"
url: https://www.desertcart.pe/products/224044451-4-32mm-metric-5-cobalt-step-drill-bit-for-stainless
store_origin: PE
region: Peru
---

# 2-3x faster drilling speed 66-69 HRC ultra-hard cobalt steel 15 precise step sizes (4-32mm) 4-32mm Metric 5% Cobalt Step Drill Bit for Stainless Steel and Hard Metal (15 Steps)

**Brand:** stroton
**Price:** S/.204
**Availability:** ✅ In Stock

## Summary

> ⚡ Drill Smarter, Last Longer, Cut Faster!

## Quick Answers

- **What is this?** 4-32mm Metric 5% Cobalt Step Drill Bit for Stainless Steel and Hard Metal (15 Steps) by stroton
- **How much does it cost?** S/.204 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/224044451-4-32mm-metric-5-cobalt-step-drill-bit-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

- • **Built to Outlast:** Premium M35 5% cobalt steel with 66-69 HRC hardness ensures unmatched heat, wear, and chip resistance.
- • **Speed Meets Strength:** Drill through stainless steel and hard metals 2-3 times faster without sacrificing durability.
- • **Multi-Material Mastery:** Effortlessly cuts through stainless steel, iron, aluminum, wood, PVC, and plastics—one bit for all projects.
- • **Precision in Every Step:** 15 graduated drill sizes from 4mm to 32mm for versatile, exact hole-making.
- • **Cost-Effective Longevity:** Higher upfront value but lowest cost per hole thanks to extended tool life and sharpness retention.

## Overview

The STROTON 4-32mm Metric 5% Cobalt Step Drill Bit is engineered with premium M35 cobalt steel, delivering exceptional hardness (66-69 HRC) and heat resistance. Featuring 15 precise step sizes, it enables fast, clean drilling through stainless steel, hard metals, and multiple materials. Designed for professionals demanding durability and efficiency, this bit runs 2-3 times faster and lasts significantly longer, reducing overall costs and downtime.

## Description

Buy STROTON 4-32mm Metric 5% Cobalt Step Drill Bit for Stainless Steel and Hard Metal (15 Steps): Step Drill Bits - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great Bit - All metal bits are consumable in my opinion. But this one is lasting a really long time. Very sharp, and with proper tap oil cuts very clean holes in aluminum and steel. Price is great, so I’ll buy another in anticipation of eventual failure, and will probably continue to buy more.
Review: Great bit - This bit is awesome. Needed to drill quarter inch steel on my heavy duty utility trailer. I used a center punch to mark my holes. Plenty of cutting oil and a slow speed on the drill, easily punched right through. Clean holes.

## Features

- Premium M35 5% Cobalt Steel ,66-69 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life.
- Grinding the Cutting Edge Three Times,with the High HRC and Heat Resistance of the Material,Desigh for Cutting through Stainless steel , Iron plate, Aluminum,Ducts,Wood,PVC and Plastic.
- This Cobalt Step Drill Bit is Typically Capable of Running Two to Three 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.
- [4-32mm] 15 Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0886JKJMD |
| Best Sellers Rank | #55,673 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #90 in Step Drill Bits |
| Brand | STROTON |
| Brand Name | STROTON |
| Customer Reviews | 4.6 out of 5 stars 1,193 Reviews |
| Cutting Angle String | 135 degrees |
| Cutting Diameter | 4-32 millimeters |
| Finish Type | Brass |
| Finish Types | Brass |
| Item Dimensions | 5.83 x 2.84 x 1.61 inches |
| Manufacturer | STROTON Ltd |
| Material | Cobalt , Cobalt Steel |
| Material Type | Cobalt, Cobalt Steel |
| Minimum Bore Diameter | 4 millimeters |
| Model | Cobalt-15s-(4-32mm) |
| Number of Flutes | 1 |
| Number of Packs | 1 |
| Number of Pieces | 15 |
| Part Number | Cobalt-15s-(4-32mm) |
| Point Style | Taper Point |
| Set Name | 15 pieces |
| Shank Type | Straight |
| Surface Recommendation | Iron, Stainless Steel, Iron Plate, Aluminium, Wood, PVC, Plastic |
| Tool Flute Type | Spiral |
| UPC | 630808641435 |
| Unit Count | 1 Count |

## Product Details

- **Material:** Cobalt, Cobalt Steel
- **Cutting Diameter:** 4-32 Millimeters
- **Finish Type:** Brass
- **Shank Type:** Straight
- **Cutting Angle String:** 135 Degrees

## Images

![4-32mm Metric 5% Cobalt Step Drill Bit for Stainless Steel and Hard Metal (15 Steps) - Image 1](https://m.media-amazon.com/images/I/51tNeQl23gL.jpg)
![4-32mm Metric 5% Cobalt Step Drill Bit for Stainless Steel and Hard Metal (15 Steps) - Image 2](https://m.media-amazon.com/images/I/51LXpZnlevL.jpg)
![4-32mm Metric 5% Cobalt Step Drill Bit for Stainless Steel and Hard Metal (15 Steps) - Image 3](https://m.media-amazon.com/images/I/61lq2UxQT9L.jpg)
![4-32mm Metric 5% Cobalt Step Drill Bit for Stainless Steel and Hard Metal (15 Steps) - Image 4](https://m.media-amazon.com/images/I/71sFT4uc+yL.jpg)
![4-32mm Metric 5% Cobalt Step Drill Bit for Stainless Steel and Hard Metal (15 Steps) - Image 5](https://m.media-amazon.com/images/I/61dS5eigL4L.jpg)

## Available Options

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

## Questions & Answers

**Q: what is the recommended speed for this bit for stainless steel?**
A: I use an ancient Craftsman 1/2 horse with one speed (400RPM) and can get through anything.

**Q: Will this bit drill cast iron pipe?**
A: I have used the bit on stainless, carbon, galvanized, and aluminum. One recurring issue is as each step breaks through, it catches and hard stops the bit. That action might cause cast to crack, especially on the larger diameter holes.

**Q: Is this left-handed threaded?**
A: This is a step drill. It has no threads

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Bit
*by M***P on June 30, 2025*

All metal bits are consumable in my opinion. But this one is lasting a really long time. Very sharp, and with proper tap oil cuts very clean holes in aluminum and steel. Price is great, so I’ll buy another in anticipation of eventual failure, and will probably continue to buy more.

### ⭐⭐⭐⭐⭐ Great bit
*by J***S on November 25, 2025*

This bit is awesome. Needed to drill quarter inch steel on my heavy duty utility trailer. I used a center punch to mark my holes. Plenty of cutting oil and a slow speed on the drill, easily punched right through. Clean holes.

### ⭐⭐⭐⭐ Worked great
*by C***K on April 24, 2024*

If drilling thru stainless use cutting oil and this will last. This drill did the job.

## Frequently Bought Together

- STROTON 4-32mm Metric 5% Cobalt Step Drill Bit for Stainless Steel and Hard Metal (15 Steps)
- Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs)
- Forney 20857 Tap Magic Industrial Pro Cutting Fluid, 4 oz

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-08-16*