--- product_id: 484403975 title: "Hole Saw 4” (102mm) for Wood, HSS Bi-Metal Hole Cutter with Pilot Drill Bit for Plastic, Plastboard, Cornhole, Ceiling and Drywall" brand: "itoolfirm" price: "¥4241" currency: JPY in_stock: true reviews_count: 13 category: "Itoolfirm" url: https://www.desertcart.jp/products/484403975-hole-saw-4-102mm-for-wood-hss-bi-metal-hole store_origin: JP region: Japan --- # HSS bi-metal sharp teeth Efficient chip removal design 4” (102mm) precision cut Hole Saw 4” (102mm) for Wood, HSS Bi-Metal Hole Cutter with Pilot Drill Bit for Plastic, Plastboard, Cornhole, Ceiling and Drywall **Brand:** itoolfirm **Price:** ¥4241 **Availability:** ✅ In Stock ## Summary > ⚡ Cut Clean, Cut Smart — The Hole Saw That Means Business ## Quick Answers - **What is this?** Hole Saw 4” (102mm) for Wood, HSS Bi-Metal Hole Cutter with Pilot Drill Bit for Plastic, Plastboard, Cornhole, Ceiling and Drywall by itoolfirm - **How much does it cost?** ¥4241 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/484403975-hole-saw-4-102mm-for-wood-hss-bi-metal-hole) ## 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 - • **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 holes every time. - • **Optimized Chip Ejection:** Slug holes reduce friction and heat, boosting cutting speed and tool life. - • **Power-Saving Efficiency:** Less material resistance means longer battery life on cordless drills. - • **Versatile Material Compatibility:** Effortlessly cuts wood, plastic, drywall, and more for all your projects. ## Overview The ITOOLFIRM 4” (102mm) HSS Bi-Metal Hole Saw delivers precision and durability for professional-grade cutting in wood, plastic, drywall, and more. Featuring high-speed steel teeth and an innovative chip ejection system, it ensures fast, clean holes with minimal effort and extended tool life. Perfect for recessed lighting, vent installation, and cable management, this hole saw is a must-have for efficient, reliable DIY and professional projects. ## Description ITOOLFIRM HOLE SAWS for Wood, Ceiling, Vent Pipe and Drywall Features: BI-Metal + High Speed Steel(HSS) Extremely fast sawing with minimal expenditure of force High concentric and side-stroke precision ADVANTAGEs compare to other hole drills: They can cut holes with much larger diameters than traditional drill bits. much more EFFICIENT than a spade drill or twist drill. APPLIED TO CUT... Household wood Galvanized pipe Fire hose Gypsum board Holes in Ceiling for lights Holes for vent or fans Holes in table or wall for cable Cornhole COMPATIBLE DEVICE Pistol drill bench drill vertical drill press Precondition: drill chuck is required COMPATIBLE MATERIAL Wood Plastic 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. 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: Excellent Hole Bit - Excellent product for the money, works well and durable ## Features - ⚙️【HOLE CUTTER】The HSS hole saws are perfect cutting tools for installing recessed light 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 saw to provide faster and accurate cutting than standard hole saws, the diameter errors of the cut hole are less than a millimeter. - ⚙️【MORE EFFICIENCY】The slug holes around the saw are able to remove the wood chips while cutting, reduce friction heat, improve the efficiency. And the 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. - ⚙️【TRUST to PURCHASE】 60 days free return and replace service to make sure our customers'satisfaction with every purchase. If you have met problems like "missing parts", please be free to contacts us, we will reply you in 6 hours to solve this. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BBSTXTF2 | | Best Sellers Rank | #3,168 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in Hole Saws | | Brand Name | ITOOLFIRM | | Color | Red | | Compatible Material | Acrylic, Fiberglass, Plastic, Wood | | Customer Reviews | 4.5 4.5 out of 5 stars (2,837) | | Item Thickness | 1/12 Inches | | Item Weight | 0.36 Kilograms | | Manufacturer | ITOOLFIRM | | Material Type | High Speed Steel | | Model | HSRED-102MM | | Number of Teeth | 4 | | Part Number | HSRED-102MM | | Style Name | Basic | ## Product Details - **Brand:** ITOOLFIRM - **Color:** Red - **Item Thickness:** 1/12 Inches - **Item Weight:** 0.36 Kilograms - **Material:** High Speed Steel - **Number of Teeth:** 4 - **Style:** Basic ## Images ![Hole Saw 4” (102mm) for Wood, HSS Bi-Metal Hole Cutter with Pilot Drill Bit for Plastic, Plastboard, Cornhole, Ceiling and Drywall - Image 1](https://m.media-amazon.com/images/I/61PAoJtGccL.jpg) ![Hole Saw 4” (102mm) for Wood, HSS Bi-Metal Hole Cutter with Pilot Drill Bit for Plastic, Plastboard, Cornhole, Ceiling and Drywall - Image 2](https://m.media-amazon.com/images/I/61-rtXk+oIL.jpg) ![Hole Saw 4” (102mm) for Wood, HSS Bi-Metal Hole Cutter with Pilot Drill Bit for Plastic, Plastboard, Cornhole, Ceiling and Drywall - Image 3](https://m.media-amazon.com/images/I/61oiePUhqTL.jpg) ![Hole Saw 4” (102mm) for Wood, HSS Bi-Metal Hole Cutter with Pilot Drill Bit for Plastic, Plastboard, Cornhole, Ceiling and Drywall - Image 4](https://m.media-amazon.com/images/I/71KMcrRV0cL.jpg) ![Hole Saw 4” (102mm) for Wood, HSS Bi-Metal Hole Cutter with Pilot Drill Bit for Plastic, Plastboard, Cornhole, Ceiling and Drywall - Image 5](https://m.media-amazon.com/images/I/71C9C6HXzrL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: is the width of the blade the actual hole measurement (includes the curf)?** A: Yes. The diameter of the hole will be 3 3/4" but it might be slightly larger, maybe 1/16" due to movement during drilling. If you are on a drill press with material clamped will be 3 3/4". **Q: Will this cut through .125 aluminum?** A: It could cut, but not recommended for 125mm aluminum, hardly and not clean. **Q: What size are the threads? I want to put it on another arbor with Quick Lock 7/16" shank with 5/8" threads.** A: 3/8" triangel shank with 5/8" threads. **Q: Would this work for a lock installation on a standard exterior door which has steel cladding?** A: I read the description. It says for metal and wood. Elementary education is a wonderful thing. ## 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. ### ⭐⭐⭐⭐⭐ Excellent Hole Bit *by B***L on March 26, 2026* Excellent product for the money, works well and durable ### ⭐⭐⭐⭐⭐ 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. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/484403975-hole-saw-4-102mm-for-wood-hss-bi-metal-hole](https://www.desertcart.jp/products/484403975-hole-saw-4-102mm-for-wood-hss-bi-metal-hole) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-16*