--- product_id: 148806179 title: "6pcs Square Hole Mortise Chisel Drill Bit Tools, 5/8\" 9/16\" 1/2\" 3/8\" 5/16\" 1/4\" HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set, Different Sizes" brand: "yaekoo" price: "฿6367" currency: THB in_stock: true reviews_count: 5 category: "Yae Koo" url: https://www.desertcart.co.th/products/148806179-6pcs-square-hole-mortise-chisel-drill-bit-tools-5-8 store_origin: TH region: Thailand --- # 6 precision sizes 1/4" to 5/8" Optimized for clean square wood mortises HRC48-50 high-speed steel durability 6pcs Square Hole Mortise Chisel Drill Bit Tools, 5/8" 9/16" 1/2" 3/8" 5/16" 1/4" HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set, Different Sizes **Brand:** yaekoo **Price:** ฿6367 **Availability:** ✅ In Stock ## Summary > 🛠️ Master the Art of the Perfect Square Hole — Because Precision is Power ## Quick Answers - **What is this?** 6pcs Square Hole Mortise Chisel Drill Bit Tools, 5/8" 9/16" 1/2" 3/8" 5/16" 1/4" HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set, Different Sizes by yaekoo - **How much does it cost?** ฿6367 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/148806179-6pcs-square-hole-mortise-chisel-drill-bit-tools-5-8) ## Best For - yaekoo enthusiasts ## Why This Product - Trusted yaekoo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision in Every Cut:** Six versatile sizes from 1/4" to 5/8" cover all your mortising needs with exact fit. - • **Seamless Compatibility:** Designed to work flawlessly with all mortise and tenon machines—upgrade your workflow instantly. - • **Labor-Saving Efficiency:** Speeds up construction and reduces manual effort, cutting project time and costs significantly. - • **Engineered for Endurance:** Crafted from heat-treated HSS alloy steel (HRC48-50) for long-lasting sharpness and strength. - • **Professional Finish Every Time:** Spiral flute and brad point design ensure clean, precise square holes that impress clients and peers alike. ## Overview This 6-piece Square Hole Mortise Chisel Drill Bit Set features six sizes ranging from 1/4" to 5/8", made from heat-treated high-speed steel (HRC48-50) for durability. Designed specifically for woodworking mortises, it fits all mortise and tenon machines, enabling faster, cleaner, and more precise square holes. Ideal for professionals in construction, installation, and decoration, it reduces labor intensity and project costs while delivering a polished finish. ## Description Clamping shank diameter: 19mm (Round) Professional wood drill, suitable for construction, installation, decoration, decoration and other industries. Note: Square hole drill can not use electric drill, drill square hole need to cooperate with square hole drill (mortise and tenon) use. before you buy it, please kindly check whether it suits your needs.thank you! Review: Used to chisel square holes - If anybody ends up looking for a way to drill square holes, these work. I made a jig that held it where I needed it, then drilled down using this bit. Then took the bit out of the square chisel and just used a hammer to pound the chisel portion into the wood, it made a perfectly square hole. You then have to use a standard chisel to clean it up a bit since it won't make the bottom of the hole square. Hope this helps someone else. I used it to make square holes in steps for cast iron balusters. They look great. This way I didn't have to use those ugly shoes at the bottom. For the price it was worth it. Even if it would be useless after this one project, it was cheaper than the shoes would have been, but the tool is still good and can be used the next time I need a square hole. Review: Great! - Better than I expected. ## Features - Sizes of this Square Hole Mortise Chisel Drill Bit set: 1/4 Inch (6.4mm), 5/16 Inch (8mm), 3/8 Inch (9.5mm),1/2 Inch (12.7mm), 5/8 Inch (16mm), 9/16 Inch (14mm) - Material: Heat treatment, HRC48~50 high-speed steel, ensure this Square Hole Drill bits Set Durable. - Mortising Attachment Suitable for all mortise and drill accessories. - This Mortiser Drill Bits set can be used with mortise and tenon machine to achieve double effect. - Wide Function: This Mortise Chisel set can Reduce the labor intensity of construction workers, accelerate the construction speed, reduce the construction cost of construction, installation, decoration, decoration industry. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07RZQND2R | | Best Sellers Rank | 1,138,301 in DIY & Tools ( See Top 100 in DIY & Tools ) 8,849 in Drill Bit Sets | | Brand | YaeKoo | | Customer Reviews | 4.3 out of 5 stars 459 Reviews | | Cutting Angle String | 6E+1 Degrees | | Cutting Diameter | 6.4 Millimetres | | Cutting angle string | 6E+1 Degrees | | Cutting diameter | 6.4 Millimetres | | Finish Types | Hss | | Finish type | Hss | | Item Weight | 1 Pounds | | Manufacturer | Yaemart Corportation | | Manufacturer Part Number | Mortise Square hole drill bits | | Material | Alloy Steel | | Minimum Bore Diameter | 6.4 Millimetres | | Model Number | Mortise Square hole drill bits | | Number of Flutes | 2 | | Number of Pieces | 6 | | Point Style | Brad Point | | Set Name | Mortise Square Hole Drill Bit Set | | Shank Type | Round | | Shank type | Round | | Surface Recommendation | Wood | | Tool Flute Type | Spiral | | UPC | 615200909352 | | Unit Count | 1.0 count | ## Product Details - **Cutting angle string:** 6E+1 Degrees - **Cutting diameter:** 6.4 Millimetres - **Finish type:** Hss - **Material:** Alloy Steel - **Shank type:** Round ## Images ![6pcs Square Hole Mortise Chisel Drill Bit Tools, 5/8" 9/16" 1/2" 3/8" 5/16" 1/4" HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set, Different Sizes - Image 1](https://m.media-amazon.com/images/I/71YxTCmWXWL.jpg) ![6pcs Square Hole Mortise Chisel Drill Bit Tools, 5/8" 9/16" 1/2" 3/8" 5/16" 1/4" HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set, Different Sizes - Image 2](https://m.media-amazon.com/images/I/61MVbzYM1qL.jpg) ![6pcs Square Hole Mortise Chisel Drill Bit Tools, 5/8" 9/16" 1/2" 3/8" 5/16" 1/4" HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set, Different Sizes - Image 3](https://m.media-amazon.com/images/I/61oLuHtNkNL.jpg) ![6pcs Square Hole Mortise Chisel Drill Bit Tools, 5/8" 9/16" 1/2" 3/8" 5/16" 1/4" HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set, Different Sizes - Image 4](https://m.media-amazon.com/images/I/610LmeHLScL.jpg) ![6pcs Square Hole Mortise Chisel Drill Bit Tools, 5/8" 9/16" 1/2" 3/8" 5/16" 1/4" HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set, Different Sizes - Image 5](https://m.media-amazon.com/images/I/61xPs1T0NWL.jpg) ## Questions & Answers **Q: What diameter is the square chisel shank 3/4 inch or 5/8th inch? i need to know if these will fit the mortising attachment i have.** A: 3/4" I returned them because I needed 5/8 **Q: Can I use these as they are or do I need to buy other attachments to use them?** A: They attach to a device that bolts to your drill press. **Q: Buenas, que contiene el kit? solamente las brocas o también el adaptador para sujetar la mecha cuadrada?** A: Hola, el kit contiene las brocas con el cuadrante de la misma broca (mecha cuadrada). La base del adaptador no lo compré y, creo que lo podré construir con platinas aceradas. Espero que no sea tan difícil, cuando lo termine les estaré contando como me fue. **Q: I see people mention wrong shank size. Will these fit a craftsman drill press?** A: It should. Don't have a Craftsman drill press, but I thought that all drill presses had adjustable chucks. These bits are designed to be used with drill presses, so I can't imagine that Craftsman would let you down here. Your drill chuck may use a key to open and close it to your desired size. As with any specialty bit, be gentle & never force the bit. Insert it into the wood a short depth and pull it out frequently to allow the wood chips an escape so they don't get packed in too tightly and overheat the bit. I presume you are working with wood. I don't think these would fare well with metals. Mortising can be an art form. Enjoy them & make them last. They are a nice set. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Used to chisel square holes *by B***R on 19 February 2025* If anybody ends up looking for a way to drill square holes, these work. I made a jig that held it where I needed it, then drilled down using this bit. Then took the bit out of the square chisel and just used a hammer to pound the chisel portion into the wood, it made a perfectly square hole. You then have to use a standard chisel to clean it up a bit since it won't make the bottom of the hole square. Hope this helps someone else. I used it to make square holes in steps for cast iron balusters. They look great. This way I didn't have to use those ugly shoes at the bottom. For the price it was worth it. Even if it would be useless after this one project, it was cheaper than the shoes would have been, but the tool is still good and can be used the next time I need a square hole. ### ⭐⭐⭐⭐⭐ Great! *by D***S on 8 April 2020* Better than I expected. ### ⭐⭐⭐⭐⭐ Square holes bits *by G***E on 5 September 2024* ## Frequently Bought Together - 6pcs Square Hole Mortise Chisel Drill Bit Tools, 5/8" 9/16" 1/2" 3/8" 5/16" 1/4" HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set, Different Sizes - Milescraft 1318 DrillMate Portable Drillling Guide – Precision Drilling Jig Attachment for Drilling Angled or Straight Holes, Adjustable Drill Guide Attachment, Portable Drill Press with 3/8” Chuck --- ## 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.co.th/products/148806179-6pcs-square-hole-mortise-chisel-drill-bit-tools-5-8](https://www.desertcart.co.th/products/148806179-6pcs-square-hole-mortise-chisel-drill-bit-tools-5-8) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-06-29*