---
product_id: 17200235
title: "Irwin Tools IRWIN Step Drill Bit, 1/8-Inch to 1/2-Inch Step, 1/4-Inch Shank (10231) Silver|Silver metallic"
brand: "irwin"
price: "€ 40.58"
currency: EUR
in_stock: true
category: "Irwin"
url: https://www.desertcart.fi/products/17200235-irwin-tools-irwin-step-drill-bit-1-8-inch-to
store_origin: FI
region: Finland
---

# 3-flat hex shank prevents slipping Save time with 13 hole sizes in one bit Patented single-flute for precise, clean holes Irwin Tools IRWIN Step Drill Bit, 1/8-Inch to 1/2-Inch Step, 1/4-Inch Shank (10231) Silver|Silver metallic

**Brand:** irwin
**Price:** € 40.58
**Availability:** ✅ In Stock

## Summary

> 🔧 Drill Smarter, Not Harder: One Bit to Rule Them All!

## Quick Answers

- **What is this?** Irwin Tools IRWIN Step Drill Bit, 1/8-Inch to 1/2-Inch Step, 1/4-Inch Shank (10231) Silver|Silver metallic by irwin
- **How much does it cost?** € 40.58 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/17200235-irwin-tools-irwin-step-drill-bit-1-8-inch-to)

## Best For

- irwin enthusiasts

## Why This Product

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

## Key Features

- • **SpeedPoint Tip:** Faster penetration and zero walking for flawless starts on any thin material—get the job done right, fast.
- • **One Bit, 13 Sizes:** Drill holes from 1/8" to 1/2" in 1/32" increments without swapping bits—efficiency unlocked.
- • **Slip-Free Hex Shank:** 3-flat hex shank locks firmly in your drill chuck—no slips, no interruptions, just pure control.
- • **Precision Cutting Edge:** Patented single-flute design ensures smooth, true round holes every time—professional finish guaranteed.
- • **Versatile Material Master:** Perfect for stainless steel, aluminum, brass, plastic, and laminates—your all-in-one thin material solution.

## Overview

The Irwin Tools IRWIN Step Drill Bit 10231 is a high-speed steel, single-flute step drill bit with 13 hole sizes ranging from 1/8" to 1/2" in 1/32" increments. Featuring a patented cutting edge and SpeedPoint tip, it delivers precise, clean holes in thin materials like metal and plastic. Its 3-flat hex shank ensures slip-free operation, making it an essential time-saving tool for professionals and DIYers alike.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00004THYX |
| Best Sellers Rank | #35,633 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #58 in Step Drill Bits |
| Brand | IRWIN |
| Cutting Angle String | 118 Degrees |
| Cutting Diameter | 12.7 Millimeters |
| Date First Available | April 1, 2004 |
| Department | Unisex-Adult |
| Finish Type | Black Oxide |
| Global Trade Identification Number | 00038548101019 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.44 ounces |
| Item dimensions L x W x H | 6 x 2.87 x 0.75 inches |
| Item model number | 10231 |
| Manufacturer | IRWIN |
| Material | High Speed Steel (HSS) |
| Number of Flutes | 1 |
| Number of Pieces | 1 |
| Point Style | Step Point |
| Product Dimensions | 6 x 2.87 x 0.75 inches |
| Set Name | 1/8" to 1/2" 13 SZ |
| Shank Type | Hex 3-flat |
| Surface Recommendation | Aluminum,Brass,Copper,Metal,Plastic,Stainless Steel,Steel |
| Tool Flute Type | Spiral |
| UPC | 787721839125 780541552908 038548101019 |
| Unit Count | 1.0 Count |

## Product Details

- **Cutting Angle String:** 118 Degrees
- **Cutting Diameter:** 12.7 Millimeters
- **Finish Type:** Black Oxide
- **Material:** High Speed Steel (HSS)
- **Shank Type:** Hex 3-flat

## Images

![Irwin Tools IRWIN Step Drill Bit, 1/8-Inch to 1/2-Inch Step, 1/4-Inch Shank (10231) Silver|Silver metallic - Image 1](https://m.media-amazon.com/images/I/81zJqJIDy6L.jpg)

## Frequently Bought Together

- Irwin Tools IRWIN Step Drill Bit, 1/8-Inch to 1/2-Inch Step, 1/4-Inch Shank (10231) Silver|Silver metallic
- Irwin Tools IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234)
- Jerax tools 1/4 to 1-3/8 Inch Step Drill Bit Straight Grooved Double Fluted, M2 High Speed Steel Drill bits for Hole Drilling in Stainless Steel, Copper, Aluminum, Wood, Plastic

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-05-16*