---
product_id: 326140159
title: "1/2\", 7/8\" & 1-3/8\" Step Drill Bit Set, Straight Grooved Double Fluted M2 High Speed Steel Drill bits for Hole Drilling in Stainless Steel, Copper, Aluminum, Wood,Plastic"
brand: "jerax tools"
price: "฿4923"
currency: THB
in_stock: true
reviews_count: 8
category: "Jerax Tools"
url: https://www.desertcart.co.th/products/326140159-1-2-7-8-and-1-3-8-step-drill
store_origin: TH
region: Thailand
---

# Cuts up to 12ga stainless steel & multiple materials Polished steps for nonstop size visibility M2 HSS with 50% more Tungsten & 150% more Molybdenum 1/2", 7/8" & 1-3/8" Step Drill Bit Set, Straight Grooved Double Fluted M2 High Speed Steel Drill bits for Hole Drilling in Stainless Steel, Copper, Aluminum, Wood,Plastic

**Brand:** jerax tools
**Price:** ฿4923
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 1/2", 7/8" & 1-3/8" Step Drill Bit Set, Straight Grooved Double Fluted M2 High Speed Steel Drill bits for Hole Drilling in Stainless Steel, Copper, Aluminum, Wood,Plastic by jerax tools
- **How much does it cost?** ฿4923 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/326140159-1-2-7-8-and-1-3-8-step-drill)

## Best For

- jerax tools enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Heavy-Duty Performance:** Effortlessly drill through stainless steel, aluminum, copper, wood, plastic, and more up to 2.7mm thickness.
- • **Precision Engineered M2 High-Speed Steel:** Experience 50% more Tungsten and 150% more Molybdenum for unmatched durability and cleaner cuts.
- • **Optimized CNC Design for Speed & Cleanliness:** Cut faster, cleaner, and easier with double-fluted straight grooves engineered for professional results.
- • **Seamless Drilling with Polished Step Indicators:** No more stopping mid-drill—clearly see your target hole size and save valuable time.
- • **Durability Enhanced by Vacuum Heat & Nitride Coating:** Stay ahead with superior surface hardening that extends tool life and performance under pressure.

## Overview

The Jerax Tools Step Drill Bit Set features premium M2 High-Speed Steel with enhanced Tungsten and Molybdenum content, vacuum heat treatment, and nitride coating for superior durability. Designed with polished step size indicators and precision CNC machining, this set delivers fast, clean, and effortless drilling across stainless steel, aluminum, copper, wood, and plastic—making it the ultimate choice for professionals demanding efficiency and reliability.

## Description

Buy Jerax tools 1/2", 7/8" & 1-3/8" Step Drill Bit Set, Straight Grooved Double Fluted M2 High Speed Steel Drill bits for Hole Drilling in Stainless Steel, Copper, Aluminum, Wood,Plastic: Step Drill Bits - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Excellent bit - Very sharp drill bit easy to use has no problem cutting through aluminum. For the money I can't see how anything could beat this drill bit. The protective case is a big plus too.
Review: High quality - Sharp and worked great.

## Features

- [M2 HSS]: Cuts A LOT MORE CLEAN holes and much EASIER than average step bits. In general, M2 has 50% more Tungsten and 150% more Molybdenum, both of which are key elements in improving durability. Our additional Vacuum heat treatment and Nitride surface hardening treatment make the performance even better.
- [Non-stop]: Our Polished Steps and Size Highlights let you able to see target hole size during drilling. No need to stop in the middle of the drilling and check. Save you time and hassle.
- [Easier | Faster | Cleaner]: With our high-accuracy CNC processing and several optimized design details over the years, our design cuts EASY, FAST and CLEAN, outperforming the average ones on the market.
- [Heavy duty]: Cuts holes on Stainless steel, Hardened Metal, Mild steel, Galvanized steel, Aluminum, Copper, Plastic, Wood, or anything that has similar or lower hardness as these materials. Up to 12ga /2.7mm thickness for Stainless steel.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D472TSPK |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #40,078 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #5 in Step Drill Bits #370 in Drill Bits |
| Brand | Jerax tools |
| Customer Reviews | 4.6 4.6 out of 5 stars (698) |
| Date First Available | May 15, 2024 |
| Finish | Nitride Coating |
| Finish Type | Nitride Coating |
| Item Package Quantity | 1 |
| Item Weight | 11.7 ounces |
| Item dimensions L x W x H | 1 x 1 x 1 inches |
| Manufacturer | Jerax tools |
| Material | High Speed Steel (HSS) |
| Number of Flutes | 2 |
| Part Number | JTSDB904 |
| Product Dimensions | 1 x 1 x 1 inches |
| Shank Type | Straight |
| Size | Set (1/2", 7/8" & 1-3/8") (Straight) |
| Surface Recommendation | Aluminum, Copper, Plastic, Stainless Steel, Wood |
| Tool Flute Type | Straight |

## Product Details

- **Brand:** Jerax tools
- **Finish Type:** Nitride Coating
- **Item dimensions L x W x H:** 1 x 1 x 1 inches
- **Material:** High Speed Steel (HSS)
- **Shank Type:** Straight

## Images

![1/2", 7/8" & 1-3/8" Step Drill Bit Set, Straight Grooved Double Fluted M2 High Speed Steel Drill bits for Hole Drilling in Stainless Steel, Copper, Aluminum, Wood,Plastic - Image 1](https://m.media-amazon.com/images/I/71gTGBwAllL.jpg)
![1/2", 7/8" & 1-3/8" Step Drill Bit Set, Straight Grooved Double Fluted M2 High Speed Steel Drill bits for Hole Drilling in Stainless Steel, Copper, Aluminum, Wood,Plastic - Image 2](https://m.media-amazon.com/images/I/71lv-9uDKHL.jpg)
![1/2", 7/8" & 1-3/8" Step Drill Bit Set, Straight Grooved Double Fluted M2 High Speed Steel Drill bits for Hole Drilling in Stainless Steel, Copper, Aluminum, Wood,Plastic - Image 3](https://m.media-amazon.com/images/I/811LknjkQFL.jpg)
![1/2", 7/8" & 1-3/8" Step Drill Bit Set, Straight Grooved Double Fluted M2 High Speed Steel Drill bits for Hole Drilling in Stainless Steel, Copper, Aluminum, Wood,Plastic - Image 4](https://m.media-amazon.com/images/I/71gADdp0g+L.jpg)
![1/2", 7/8" & 1-3/8" Step Drill Bit Set, Straight Grooved Double Fluted M2 High Speed Steel Drill bits for Hole Drilling in Stainless Steel, Copper, Aluminum, Wood,Plastic - Image 5](https://m.media-amazon.com/images/I/71UyqzcRe0L.jpg)

## Available Options

This product comes in different **Size, Item Package Quantity** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent bit
*by R***H on January 5, 2026*

Very sharp drill bit easy to use has no problem cutting through aluminum. For the money I can't see how anything could beat this drill bit. The protective case is a big plus too.

### ⭐⭐⭐⭐⭐ High quality
*by S***N on January 16, 2026*

Sharp and worked great.

### ⭐⭐⭐⭐⭐ Well‑Made Bit That Works Smoothly
*by T***E on January 5, 2026*

This step drill bit is solidly built, made from good material, and works exactly as expected. It cuts cleanly and handles plastic with ease—I used it while building an outdoor electric wire‑organization box, and it performed beautifully.

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**Shop now:** [https://www.desertcart.co.th/products/326140159-1-2-7-8-and-1-3-8-step-drill](https://www.desertcart.co.th/products/326140159-1-2-7-8-and-1-3-8-step-drill)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-06*