---
product_id: 590050553
title: "3 1/8 inch Hole Saw Drill Bit for Metal and Wood, M42 Bi-Metal Hole Cutter with 1.5” Cutting Depth for Plywood, Fiberglass, Acrylic, Drywall and Sheet Steel"
brand: "itoolfirm"
price: "€ 50.13"
currency: EUR
in_stock: true
url: https://www.desertcart.it/products/590050553-3-1-8-inch-hole-saw-drill-bit-for-metal
store_origin: IT
region: Italy
---

# 70-80 HRC hardness for razor-sharp precision M42 Bi-Metal for unmatched durability 1.5” cutting depth for versatile projects 3 1/8 inch Hole Saw Drill Bit for Metal and Wood, M42 Bi-Metal Hole Cutter with 1.5” Cutting Depth for Plywood, Fiberglass, Acrylic, Drywall and Sheet Steel

**Brand:** itoolfirm
**Price:** € 50.13
**Availability:** ✅ In Stock

## Summary

> ⚡ Cut Clean, Cut Fast, Cut Like a Pro!

## Quick Answers

- **What is this?** 3 1/8 inch Hole Saw Drill Bit for Metal and Wood, M42 Bi-Metal Hole Cutter with 1.5” Cutting Depth for Plywood, Fiberglass, Acrylic, Drywall and Sheet Steel by itoolfirm
- **How much does it cost?** € 50.13 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/590050553-3-1-8-inch-hole-saw-drill-bit-for-metal)

## Best For

- itoolfirm enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Premium M42 bi-metal construction ensures long-lasting performance and resistance to wear, perfect for professional-grade projects.
- • **Plug & Play Ready:** Includes core drill bit and mandrel, compatible with impact drivers and cordless drills for immediate use on any job site.
- • **Precision Perfect:** Cutting accuracy within 1mm means flawless holes every time—no guesswork, just clean, professional results.
- • **Heat-Defying Design:** Strategic chip removal holes reduce friction and heat buildup, boosting efficiency and extending tool life.
- • **Multi-Material Mastery:** Effortlessly cuts through wood, metal, fiberglass, drywall, and more—your all-in-one solution for diverse tasks.

## Overview

The ITOOLFIRM 3 1/8 inch M42 bi-metal hole saw combines industrial-grade high-speed steel with a 1.5-inch cutting depth, delivering razor-sharp, precise holes in wood, metal, drywall, and fiberglass. Engineered with heat-reducing chip holes and a shock-resistant black oxide finish, it’s designed for durability and efficiency. Compatible with most drills and impact drivers, this tool is your go-to for professional, clean cuts every time.

## Description

ITOOLFIRM HOLE SAWS for Wood, Metal, Ceiling Lights, Drywall, Sheet Iron and Steel Frame. Features: BI-Metal + High Speed Steel(HSS) Extremely fast sawing with minimal expenditure of force High concentric and side-stroke precision APPLIED TO CUT... Household wood Plywood Galvanized pipe Fire hose Gypsum board PVC boards Holes in Ceiling for lights Holes for vent or fans Holes in table or wall for cable COMPATIBLE DEVICEs  Impact Driver Hand Drill Press Bench Drill Press Cordless Drill Precondition: drill chuck is required COMPATIBLE MATERIAL Wood Plastic Fiberglass Aluminum Copper INSTRUCTIONS Pre-drill using light contact pressure. Continue drilling with minimal, even pressure. Avoid oscillating while drilling.  Allow hole saw to “air” when using with wood and wood alternatives. The saw comes to a complete stop on your material before pulling it away. DIFFERENCE: Due to manual measurement and production batch is not the same, the size, weight, color will get difference (within 1%) of the normal case. Miss Parts Problem: Each hole saw is coming with a drill bit and shank, if you have revceived a product from our store without the parts, please return or replace your order. HAVE ANY PROBLEM, PLEASE CONTACT US FIRST, YOU’LL NEVER REGRET MAILLING US!!!

## Features

- ⚙️【Solid and Sturdy】 The black hole saws are much solider and sturdier than the red one, they are premium hole cutters for installing recessed lights into ceiling, for punching a big hole at wall to fit a vent pipe or an extract fan, also for cable installation and soft metal cutting.
- ⚙️【Sharp and Durable】 The cutting teeth is double layered with high speed steel, obviously thicker and heavier than the red hole saw. Strong and solid body, sharp and durable teeth, easy to punch a clean hole.
- ⚙️【Accurate Cutting】 The increased hardness(70-80HRC) of the M42 bi-Metal and the optimized tooth geometry allow our hole saws to provide faster and more accurate cutting diameter than standard hole saws, the errors of the cut size are less than one millimeter.
- ⚙️【Chips Remove】 The embed slug holes around the saw body are designed for removing the wood and metal chips while cutting. They are also good for reducing friction heat and improve the efficiency, due to the fact that less of total amount of material is actually cut.
- ⚙️【60 Days Refundable】If you had any problem with the paket you have received, for example, miss parts, or just not satisfied with our products, please contact us via e-mail, all our products are refundable for 60 days.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | ITOOLFIRM |
| Part number | HSMB79MMXYUS23523 |
| Item Weight | 522 g |
| Package Dimensions | 13 x 12.8 x 5.41 cm; 522 g |
| Manufacturer reference | HSMB79MMXYUS23523 |
| Size | 3-1/8"(79mm) |
| Color | Frosted Black |
| Style | Industrial |
| Finish | Black Oxide |
| Material | High Speed Steel |
| Shape | Round |
| Item thickness | 0.1 Inches |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Accessory Connection Type | Mandrel Mounted |
| Special Features | shock-resistant |
| Included components | Core Drill bit and Mandrel included |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** High Speed Steel
- **Brand:** ITOOLFIRM
- **Colour:** Frosted Black
- **Number of teeth:** 31
- **Style:** Industrial

## Images

![3 1/8 inch Hole Saw Drill Bit for Metal and Wood, M42 Bi-Metal Hole Cutter with 1.5” Cutting Depth for Plywood, Fiberglass, Acrylic, Drywall and Sheet Steel - Image 1](https://m.media-amazon.com/images/I/71rMJ9sDm4L.jpg)
![3 1/8 inch Hole Saw Drill Bit for Metal and Wood, M42 Bi-Metal Hole Cutter with 1.5” Cutting Depth for Plywood, Fiberglass, Acrylic, Drywall and Sheet Steel - Image 2](https://m.media-amazon.com/images/I/711ytrxOrzL.jpg)
![3 1/8 inch Hole Saw Drill Bit for Metal and Wood, M42 Bi-Metal Hole Cutter with 1.5” Cutting Depth for Plywood, Fiberglass, Acrylic, Drywall and Sheet Steel - Image 3](https://m.media-amazon.com/images/I/71P4t+sWzAL.jpg)
![3 1/8 inch Hole Saw Drill Bit for Metal and Wood, M42 Bi-Metal Hole Cutter with 1.5” Cutting Depth for Plywood, Fiberglass, Acrylic, Drywall and Sheet Steel - Image 4](https://m.media-amazon.com/images/I/71tXaznlV6L.jpg)
![3 1/8 inch Hole Saw Drill Bit for Metal and Wood, M42 Bi-Metal Hole Cutter with 1.5” Cutting Depth for Plywood, Fiberglass, Acrylic, Drywall and Sheet Steel - Image 5](https://m.media-amazon.com/images/I/716vSZdIozL.jpg)

## Available Options

This product comes in different **Color, Size** options.

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-01-25*