--- product_id: 69980622 title: "Set of 4 Square Hole Bits, Hollow Steel Bendanes Woodworking Tools Set (1/4-1/2-5/16-3/8 Inch)" brand: "qisf" price: "241.89 DT" currency: TND in_stock: true reviews_count: 13 category: "Qisf" url: https://www.desertcart.tn/products/69980622-set-of-4-square-hole-bits-hollow-steel-bendanes-woodworking store_origin: TN region: Tunisia --- # 4 precise sizes: 1/4" to 1/2" HRC48~50 high hardness steel Fits all drill machines & attachments Set of 4 Square Hole Bits, Hollow Steel Bendanes Woodworking Tools Set (1/4-1/2-5/16-3/8 Inch) **Brand:** qisf **Price:** 241.89 DT **Availability:** βœ… In Stock ## Summary > πŸͺš Drill Square, Build Sharp: Elevate Your Woodworking Game! ## Quick Answers - **What is this?** Set of 4 Square Hole Bits, Hollow Steel Bendanes Woodworking Tools Set (1/4-1/2-5/16-3/8 Inch) by qisf - **How much does it cost?** 241.89 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/69980622-set-of-4-square-hole-bits-hollow-steel-bendanes-woodworking) ## Best For - qisf enthusiasts ## Why This Product - Trusted qisf brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Versatile Size Range:** Includes 4 essential square hole sizes (1/4", 5/16", 3/8", 1/2") to tackle diverse woodworking tasks with ease. - β€’ **Universal Compatibility:** Designed to fit all standard drill presses and attachments, making it your go-to tool for professional-grade mortising. - β€’ **Effortless Efficiency Boost:** Reduces labor intensity and accelerates work speed, saving you time and cutting costs on every build or renovation. - β€’ **Clean, Precise Cuts Every Time:** Innovative design discharges dust through the bit, ensuring smooth, square holes with minimal cleanupβ€”perfect for flawless joinery. - β€’ **Precision-Crafted High-Speed Steel:** Engineered with HRC48~50 hardness for durability and sharpness that lasts through every project. ## Overview This Set of 4 Square Hole Bits by QISF features high-speed steel construction with HRC48~50 hardness, offering four precise sizes from 1/4" to 1/2". Compatible with all drill machines and attachments, these bits are engineered to create clean, square holes in wood efficiently, reducing labor and enhancing productivity for professionals in construction, renovation, and woodworking. ## Description Features: 1. Professional wood drill bit, suitable for construction, installation, renovation, decoration, etc. 2. The workpiece forms a hole drilled by the rotating body, while the impact of the use of the percussion force is transmitted to the outside of the body, the material creates a round hole and a square head, in one go, and the dust can be discharged through the tube. 3. The dimension refers to the length of the drilled square hole. 4. The cylinder diameter of the clamping portion is 19 mm. 5. The center of the drill hole is over 210mm, for longer drill centers. Specifications: Sizes: 1/4" (6.35mm), 5/16" (7.94mm), 3/8" (9.5mm), 1/2" (12.7mm). Material: High Speed Steel DIY Supplies: Woodworking Use: Drilling/perforating wood. Package includes: 1 x 1/4" or 1/4" drill bit 1 x 5/16" or 7.95mm drill bit 1 x 3/8" or 9.5mm drill bit 1 x 1/2" or 1/2" drill bit Note: Please allow 1-3cm error due to manual measurement. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Thank you for your understanding. Sold by QISF (Quality Innovation Service First) Review: Great tool! - I bought these to make some mortice & tenon joints (the mortice part anyways). They appear to be good quality and at under Β£19 for 4 they are not a bad price either. The shank is 19mm which typically indicates these are for use in a drill press, you might be able to fit them in a hand drill, but hand drills are not really designed to assert the force needed for the outer square chisel part to cut out what the drill does not. Normally I would have used a Forstner bit to cut out most of the mortice and then cleaned up the edges with a chisel, using these square hole drill bits makes morticing so much quicker and easier! If you overlap the cutting area by about .5mm each time you have hardly no cleanup to do at the end, I found it best to work from both ends of the mortice at the same time alternating between the two so you end up with one final hole to drill in the middle. This gives you better support than trying to cut at the end of a hole and only having half the drill bit in contact with some wood. Also, if you can drill the hole a little bit deeper than the tenon requires, you don't even have to tidy up the bottom of the mortice! Review: Square drill bits πŸ‘ - Performed as expected πŸ‘Œ ## Features - Professional design ideal for drilling square holes in wood with a mortiser. Fits all machines and drill attachments. Square hole drill bit is mainly used in wood field. - Material and size: made of high speed steel. Heat treatment, HRC48~50, high hardness, elongated center, high concentricity; 4 sizes 1/4" (6.35mm), 5/16" (7.94mm), 3/8" (9.5mm), 1/2" (12.7mm). - Why choose this item: Reduces the labor intensity of construction workers while accelerating work speed and reducing costs. Ideal for the building, renovation and decoration industries. - Box contents: 1 x 1/4 inch (6.35 mm), 1 x 5/16 inch (7.94 mm), 1 x 3/8 inch (9.5 mm), 1 x 1/2 inch (12.7 mm) - Note: The punching square must use drill, hammer or other tools. (None of these are included). ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07D73ZPY5 | | Best Sellers Rank | 135,027 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,050 in Drill Bit Sets | | Brand | QISF | | Country Of Origin | China | | Customer Reviews | 4.1 out of 5 stars 659 Reviews | | Cutting Angle String | 6E+1 Degrees | | Cutting Diameter | 12.7 Millimetres | | Cutting angle string | 6E+1 Degrees | | Cutting diameter | 12.7 Millimetres | | Finish Types | High-speed Steel | | Finish type | High-speed Steel | | Manufacturer | QISF | | Manufacturer Part Number | NECALON | | Material | High Speed Steel (HSS) | | Minimum Bore Diameter | 6.35 Millimetres | | Number of Flutes | 3 | | Number of Pieces | 4 | | Point Style | Centre Point | | Set Name | QISF 4Pcs Woodworking Square Hole Drill Bit Set | | Shank Type | Square | | Shank type | Square | | Surface Recommendation | Wood | | Tool Flute Type | Straight | | UPC | 712182899883 | ## Product Details - **Cutting angle string:** 6E+1 Degrees - **Cutting diameter:** 12.7 Millimetres - **Finish type:** High-speed Steel - **Material:** High Speed Steel (HSS) - **Shank type:** Square ## Images ![Set of 4 Square Hole Bits, Hollow Steel Bendanes Woodworking Tools Set (1/4-1/2-5/16-3/8 Inch) - Image 1](https://m.media-amazon.com/images/I/61CB0L6Mp8L.jpg) ![Set of 4 Square Hole Bits, Hollow Steel Bendanes Woodworking Tools Set (1/4-1/2-5/16-3/8 Inch) - Image 2](https://m.media-amazon.com/images/I/41fbv64H-yL.jpg) ![Set of 4 Square Hole Bits, Hollow Steel Bendanes Woodworking Tools Set (1/4-1/2-5/16-3/8 Inch) - Image 3](https://m.media-amazon.com/images/I/41vBT7iAASL.jpg) ![Set of 4 Square Hole Bits, Hollow Steel Bendanes Woodworking Tools Set (1/4-1/2-5/16-3/8 Inch) - Image 4](https://m.media-amazon.com/images/I/51d6OZ8BEkL.jpg) ![Set of 4 Square Hole Bits, Hollow Steel Bendanes Woodworking Tools Set (1/4-1/2-5/16-3/8 Inch) - Image 5](https://m.media-amazon.com/images/I/61cdxrJQhHL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great tool! *by T***G on 10 March 2025* I bought these to make some mortice & tenon joints (the mortice part anyways). They appear to be good quality and at under Β£19 for 4 they are not a bad price either. The shank is 19mm which typically indicates these are for use in a drill press, you might be able to fit them in a hand drill, but hand drills are not really designed to assert the force needed for the outer square chisel part to cut out what the drill does not. Normally I would have used a Forstner bit to cut out most of the mortice and then cleaned up the edges with a chisel, using these square hole drill bits makes morticing so much quicker and easier! If you overlap the cutting area by about .5mm each time you have hardly no cleanup to do at the end, I found it best to work from both ends of the mortice at the same time alternating between the two so you end up with one final hole to drill in the middle. This gives you better support than trying to cut at the end of a hole and only having half the drill bit in contact with some wood. Also, if you can drill the hole a little bit deeper than the tenon requires, you don't even have to tidy up the bottom of the mortice! ### ⭐⭐⭐⭐ Square drill bits πŸ‘ *by A***R on 3 May 2026* Performed as expected πŸ‘Œ ### ⭐⭐⭐⭐⭐ Good solid quality. *by A***R on 5 November 2025* Good quality and work fine. ## Frequently Bought Together - QISF 4Pcs Woodworking Square Hole Drill Bits,Mortise Chisel Hole Saw Drill Bit Set 1/4-1/2-5/16-3/8 inch - Folpus Square Hole Drill Bit Adapter Bench Drill to Square Tenon Machine Converter Holder Square Hole Drill Machine Chuck Bracket Eyelet Accessories --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/69980622-set-of-4-square-hole-bits-hollow-steel-bendanes-woodworking](https://www.desertcart.tn/products/69980622-set-of-4-square-hole-bits-hollow-steel-bendanes-woodworking) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-18*