---
product_id: 579337307
title: "Hole Saw 4 1/8” (105mm) for Wood and Plastic, HSS Bi-Metal Hole Cutter Core Drill Bit for Drywall, PVC Boards, Fiberglass and Vent Pipes"
brand: "itoolfirm"
price: "฿1334"
currency: THB
in_stock: true
reviews_count: 13
category: "Itoolfirm"
url: https://www.desertcart.co.th/products/579337307-hole-saw-4-1-8-105mm-for-wood-and-plastic
store_origin: TH
region: Thailand
---

# Faster, precise cuts <1mm error Slug holes for chip removal & less heat HSS Bi-Metal teeth for durability Hole Saw 4 1/8” (105mm) for Wood and Plastic, HSS Bi-Metal Hole Cutter Core Drill Bit for Drywall, PVC Boards, Fiberglass and Vent Pipes

**Brand:** itoolfirm
**Price:** ฿1334
**Availability:** ✅ In Stock

## Summary

> ⚡ Cut Clean, Cut Fast, Cut Smart — Don’t Get Left Behind!

## Quick Answers

- **What is this?** Hole Saw 4 1/8” (105mm) for Wood and Plastic, HSS Bi-Metal Hole Cutter Core Drill Bit for Drywall, PVC Boards, Fiberglass and Vent Pipes by itoolfirm
- **How much does it cost?** ฿1334 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/579337307-hole-saw-4-1-8-105mm-for-wood-and-plastic)

## 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

- • **Risk-Free Investment:** 60-day refundable guarantee with responsive support—cut with confidence or your money back.
- • **Effortless Efficiency:** Innovative slug holes reduce friction and power consumption, extending your drill’s battery life.
- • **Durable Bi-Metal Teeth:** High-speed steel layered teeth ensure long-lasting sharpness and clean cuts.
- • **Precision Perfect Cuts:** Achieve sub-millimeter accuracy for flawless installations every time.
- • **Versatile Compatibility:** Works seamlessly with cordless drills, impact drivers, and bench presses on wood, plastic, drywall & more.

## Overview

The ITOOLFIRM 4 1/8” HSS Bi-Metal Hole Saw delivers precision cutting with durable high-speed steel teeth and carbide-enhanced geometry, ensuring clean holes with less than 1mm diameter error. Designed with innovative slug holes, it efficiently removes debris and reduces heat, extending tool life and battery performance. Compatible with a wide range of drills and ideal for wood, plastic, drywall, and vent pipes, it’s a professional-grade tool backed by a 60-day refund policy for worry-free use.

## Description

ITOOLFIRM HOLE SAWS for cutting Wood, Ceiling, Vent Pipes and Drywall 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.

Review: Does the job. Price/performance spot is right. - As the photos show, it did a perfect job cutting a 6 1/2" hole in my new cielling of 1" thick tongue & groove pine boards for new low-profile/flat LED recessed light fixtures. I cannot say anything meaningful about longevity of the hole saw, like many here in the reviews, I just have this small project of the cielling with 5 lights to do. After that, it's going to get put away for future need thar may never come. Or get lent out to a relative someday. However, 1" thick pine is a tougher challenge than the drywall the majority of people will likely use it on, and it did the job well. And checking around, the least expensive alternative in a local retail big-box home improvement store was $7 more. And it was the flat carbide "bumps" type that's better on drywall or tile, and difficult to use on wood. And it's no different as it is made in China too. My only significant advice is that big & wide hole saws, no matter the brand, put a huge amount of torque on the drill. And if they catch, stick, or kick in what you're cutting, they can twist the drill very SUDDENLY and very HARD. This can knock you off a ladder. Or posibly twist the drill so the battery box slugs you right in the jaw, as hard as a decent boxer's punch. If you haven't used one before, it's really worth 10 minutes of time to practice on a piece of scrap board similar to what you plan on cutting the hole into. It's important to get a feel for how the saw behaves on the drill's "Fast - Drill" and "Slow Hi-Torque" settings behave. Plus, it's good to have an understanding of how important it is to keep the saw level and square to the surface you're cutting. Because angling it unintentionally is what will make the teeth on one side dig in, stop the drill, rip it out of your hand, and make it slug you in the face. And, if your drill has a side handle for an extra 90° hold, use it.
Review: Worked great, did the job - This worked for my use case, and saved me a lot of money instead of buying a name brand one for 50 dollars after you add in the cost of an arbor. I cut 10 wood holes for cup holders on a poker table.

## Features

- ⚙️【HOLE CUTTER】The HSS hole saws are perfect cutting tools for installing recessed lights into ceiling, for punching a big hole at wall to fit a vent pipe or an extract fan, and also for cable installation.
- ⚙️【SHARP TEETH】The bi-metallic cutting teeth is layered with high speed steel, that increases their hardness and durability, and gives the hole saw excellent cutting ability to punch a clean hole.
- ⚙️【ACCURATE CUTTING】 The increased hardness of the carbide technology and optimized tooth geometry allow our hole saws to provide faster and accurate cutting than standard hole saws, the diameter errors of the cut holes are less than a millimeter.
- ⚙️【MORE EFFICIENCY】 Each hole saw is designed with slug holes, which can remove the wood chips while cutting, reduce friction heat and improve the efficiency. Due to the fact that less of total amount of material is actually cut, much less power is required, longer battery life of power tools is benefited.
- ⚙️【60 DAYS REFUNDABLE】If you are not satisfied with the hole saws, or have probelms with missing parts of the package you’ve received, please contact us via e-mail, we will reply you in 6 hours, and we promise that all our products are refundable for 60 days.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C8JP4YPF |
| Best Sellers Rank | #3,010 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in Hole Saws |
| Brand | ITOOLFIRM |
| Color | Red |
| Compatible Devices | Bench Drill Press, Cordless Drill, Hand Drill Press, Impact Driver |
| Date First Available | June 19, 2023 |
| Item Thickness | 0.08 Inches |
| Item Weight | 11.6 ounces |
| Manufacturer | ITOOLFIRM |
| Material | High Speed Steel |
| Number of Teeth | 41 |
| Product Dimensions | 4.13 x 4.13 x 0.04 inches |
| Style | Basic |

## Product Details

- **Brand:** ITOOLFIRM
- **Color:** Red
- **Compatible Devices:** Bench Drill Press, Cordless Drill, Hand Drill Press, Impact Driver
- **Item Thickness:** 0.08 Inches
- **Item Weight:** 0.33 Kilograms
- **Material:** High Speed Steel
- **Number of Teeth:** 41
- **Style:** Basic

## Images

![Hole Saw 4 1/8” (105mm) for Wood and Plastic, HSS Bi-Metal Hole Cutter Core Drill Bit for Drywall, PVC Boards, Fiberglass and Vent Pipes - Image 1](https://m.media-amazon.com/images/I/61I9vNrMH9L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does the job. Price/performance spot is right.
*by A***K on February 26, 2024*

As the photos show, it did a perfect job cutting a 6 1/2" hole in my new cielling of 1" thick tongue & groove pine boards for new low-profile/flat LED recessed light fixtures. I cannot say anything meaningful about longevity of the hole saw, like many here in the reviews, I just have this small project of the cielling with 5 lights to do. After that, it's going to get put away for future need thar may never come. Or get lent out to a relative someday. However, 1" thick pine is a tougher challenge than the drywall the majority of people will likely use it on, and it did the job well. And checking around, the least expensive alternative in a local retail big-box home improvement store was $7 more. And it was the flat carbide "bumps" type that's better on drywall or tile, and difficult to use on wood. And it's no different as it is made in China too. My only significant advice is that big & wide hole saws, no matter the brand, put a huge amount of torque on the drill. And if they catch, stick, or kick in what you're cutting, they can twist the drill very SUDDENLY and very HARD. This can knock you off a ladder. Or posibly twist the drill so the battery box slugs you right in the jaw, as hard as a decent boxer's punch. If you haven't used one before, it's really worth 10 minutes of time to practice on a piece of scrap board similar to what you plan on cutting the hole into. It's important to get a feel for how the saw behaves on the drill's "Fast - Drill" and "Slow Hi-Torque" settings behave. Plus, it's good to have an understanding of how important it is to keep the saw level and square to the surface you're cutting. Because angling it unintentionally is what will make the teeth on one side dig in, stop the drill, rip it out of your hand, and make it slug you in the face. And, if your drill has a side handle for an extra 90° hold, use it.

### ⭐⭐⭐⭐⭐ Worked great, did the job
*by G***N on January 21, 2026*

This worked for my use case, and saved me a lot of money instead of buying a name brand one for 50 dollars after you add in the cost of an arbor. I cut 10 wood holes for cup holders on a poker table.

### ⭐⭐⭐⭐⭐ Very Sharp
*by J***. on January 24, 2026*

I bought this ITOOLFIRM hole saw to cut through drywall for old-work ceiling pan electrical boxes. I only had a couple to install, so I went with this less expensive one and was really impressed. It cut very clean holes, surprisingly fast, with zero kickback. The drywall plugs even released with just a few taps. If you need to cut a 3-5/8” hole, this is the perfect saw.

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-06-14*