---
product_id: 309188953
title: "IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234)"
brand: "irwin"
price: "฿5719"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/309188953-irwin-step-drill-bit-3-16-inch-to-7-8
store_origin: TH
region: Thailand
---

# Heat-treated high-speed molybdenum steel 3/8" hex shank for slip-free grip 12-step sizes from 3/16" to 7/8" IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234)

**Brand:** irwin
**Price:** ฿5719
**Availability:** ✅ In Stock

## Summary

> ⚡ Drill Smarter, Not Harder — The Ultimate Step-Up for Pros

## Quick Answers

- **What is this?** IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234) by irwin
- **How much does it cost?** ฿5719 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/309188953-irwin-step-drill-bit-3-16-inch-to-7-8)

## 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

- • **Built to Last:** Industrial-grade molybdenum steel with heat treatment ensures unmatched durability under pressure.
- • **SpeedPoint Tip:** Faster penetration and no walking—get clean, accurate holes every time without center punches.
- • **All-in-One Precision:** 12-step drill sizes eliminate constant bit changes, streamlining your workflow.
- • **Secure Grip, Zero Slip:** 3-faltted hex shank locks firmly in your drill chuck for maximum torque transfer and control.
- • **Versatile Material Master:** Effortlessly drills through stainless steel, copper, brass, aluminum, plastic, and laminates.

## Overview

The IRWIN 10234 Step Drill Bit offers 12 precise hole sizes from 3/16" to 7/8" in one tool, crafted from heat-treated high-speed molybdenum steel for exceptional durability. Its SpeedPoint tip ensures faster, walk-free drilling in thin materials like metals and plastics, while the 3/8" hex shank guarantees a secure, slip-resistant fit in your drill. Perfect for professionals seeking efficiency and reliability in every project.

## Description

Irwin 10234 Unibit #4 12-Step High Speed Steel 3/8-inch Step Drill Bit, 1/16-inch Steps (3/16- to 7/8-inch) Save time by eliminating the need to change drills when drilling round holes in thin materials. Each smaller size drill also acts as a pilot for the next size. Made from industrial-grade high-speed molybdenum steel heat treated for maximum durability. Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates. SpeedPoint tip penetrates faster than previous Unibits and prevents walking. Non-skid tip does away with the need for center punches; 3-faltted hex shank prevents slipping in drill chuck. Drill diameters etched in flute for easy identification..

## Features

- STEP DRILL #4 3/16-7/8" 12 SZ
- brand: Irwin Tools
- manufacturer: IRWIN

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | IRWIN |
| Part Number | 10234 |
| Item model number | 10234 |
| Size | #4 (3/16-7/8") |
| Colour | Silver |
| Style | High Speed Steel |
| Finish | Black Oxide |
| Material | Alloy Steel |
| Shape | Shape |
| Thickness | 1 Inches |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Cutting Diameter | 2.5 Inches |
| Tool tip description | 118 Degree |
| Measurement System | Inch |
| Included Components | STEP DRILL #4 3/16-7/8" 12 SZ |
| Batteries included? | No |
| Batteries Required? | No |
| Assembled Diameter | 2.5 Inches |
| Item Weight | 0.28 g |

## Product Details

- **Material:** Alloy Steel
- **Finish type:** Black Oxide
- **Shank type:** Straight
- **Cutting angle string:** 135 Degrees
- **Brand:** IRWIN

## Images

![IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234) - Image 1](https://m.media-amazon.com/images/I/71wFz0DzNFL.jpg)
![IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234) - Image 2](https://m.media-amazon.com/images/I/71kdnbTaHgL.jpg)
![IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234) - Image 3](https://m.media-amazon.com/images/I/813wy7QMuPL.jpg)
![IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234) - Image 4](https://m.media-amazon.com/images/I/21ep0pYc9EL.jpg)

## Available Options

This product comes in different **Size Name, Style Name** options.

## Frequently Bought Together

- Irwin Tools IRWIN Step Drill Bit, 3/16-Inch to 7/8-Inch, 3/8-Inch Shank (10234)
- Irwin Tools IRWIN Step Drill Bit, 1/8-Inch to 1/2-Inch Step, 1/4-Inch Shank (10231) Silver|Silver metallic
- Jerax tools 3/16-7/8 Inch Step Drill Bit, M2 HSS Spiral Grooved Step Bit for Stainless Steel, Metal, Wood, Plastic

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**Shop now:** [https://www.desertcart.co.th/products/309188953-irwin-step-drill-bit-3-16-inch-to-7-8](https://www.desertcart.co.th/products/309188953-irwin-step-drill-bit-3-16-inch-to-7-8)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-20*