---
product_id: 279887263
title: "Square Hole Mortise Chisel Drill Bit Tools, HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set Twist Drill, Different Sizes 1/4\" 5/16\" 3/8\" 1/2\" 9/16\" 5/8\"(6pcs)"
brand: "dele"
price: "£38.60"
currency: GBP
in_stock: true
reviews_count: 8
category: "Dele"
url: https://www.desertcart.co.uk/products/279887263-square-hole-mortise-chisel-drill-bit-tools-hss-woodworking-hole
store_origin: GB
region: United Kingdom
---

# 6 sizes available High concentricity HSS material Square Hole Mortise Chisel Drill Bit Tools, HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set Twist Drill, Different Sizes 1/4" 5/16" 3/8" 1/2" 9/16" 5/8"(6pcs)

**Brand:** dele
**Price:** £38.60
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate Your Woodworking Game!

## Quick Answers

- **What is this?** Square Hole Mortise Chisel Drill Bit Tools, HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set Twist Drill, Different Sizes 1/4" 5/16" 3/8" 1/2" 9/16" 5/8"(6pcs) by dele
- **How much does it cost?** £38.60 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/279887263-square-hole-mortise-chisel-drill-bit-tools-hss-woodworking-hole)

## Best For

- dele enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Operation:** Drills precise holes with minimal pressure, reducing labor intensity.
- • **Versatile Size Range:** Includes 6 different sizes (1/4" to 5/8") for all your woodworking needs.
- • **Precision Engineering:** Designed for high concentricity, ensuring accurate and clean square holes.
- • **Cost-Effective Solution:** Accelerates construction speed while lowering overall project costs.
- • **Durable HSS Construction:** Crafted from high-speed steel for exceptional durability and longevity.

## Overview

This Square Hole Mortise Chisel Drill Bit Set includes six high-speed steel bits designed for drilling precise square holes in wood. With sizes ranging from 1/4" to 5/8", these bits are engineered for high concentricity and durability, making them ideal for use with tongue-and-groove machines. Perfect for professionals looking to enhance efficiency and reduce labor costs in their woodworking projects.

## Description

FEATURES: Various existing bits, can only process a circular hole, square hole can not be processed, to machining square hole, must drill the hole or cutting machine processed crude hole, then chisel made from artificial hand. This utility model in the hole drilled by the rotary body, while the impact of the use of hammer impact force transmitted to the outer body, the material crushing round hole and square head wall, a one-time processing of a square hole, and the dust can be broken slag discharged from the tube. Using different specifications of the square hole drill, matching the appropriate power of the square hole machine, you can play a square hole to meet the requirements. Professional wood drill, suitable for construction, installation, decoration, decoration and other industries. Specifications: Material: HSS ;Hardness: HRC 48~50 Holder diameter: 19mm (circular) ;Drilling core length: 200mm Slotting flute diameter:1/4 Inch (6.4mm), 5/16 Inch (8mm), 3/8 Inch (9.5mm), 1/2 Inch (12.7mm), 9/16 Inch (14mm), 5/8 Inch(16mm). Package Included: 1 x 5/8-inch (16mm) 1 x 9/16-inch (14mm) 1 x 1/2-Inch(12.7mm) 1 x 3/8-Inch(9.5mm) 1 x 5/16-Inch(8mm) 1 x 1/4-Inch(6.4mm)

Review: Bits - Just what I needed and wanted
Review: Using as a square chisel - I didn’t buy to use with a mortiser. I intended to use to make square holes for my railing balusters. Work well and have stayed sharp. Getting the job done. Now I am looking at getting a mortiser to do more wood work.

## Features

- Size: 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: Made of high-speed steel,Heat treatment, HRC48~50, high hardness,lengthened core,high concentricity.
- Application: Our woodworking morstising chisel bits suitable for drilling square holes in wood with a tongue-and-groove machine or tongue-and-groove attachment, and has a long service life, please rest assured to use.
- Drills precise holes with little pressure,reduce the labor intensity of construction workers, accelerate the construction speed, reduce the construction cost of construction, installation, decoration, decoration industry.
- Notice: square hole drill needs to cooperate with square hole drill machine (mortise and tenon) use and can not use with electric drill, bench drill.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08RCGMD31 |
| Best Sellers Rank | #108,477 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #130 in Wood Drill Bit Sets |
| Brand | Dele |
| Brand Name | Dele |
| Customer Reviews | 4.2 out of 5 stars 220 Reviews |
| Cutting Angle String | 9E+1 Degrees |
| Cutting Diameter | 0.25 Inches |
| Finish Type | Finished |
| Finish Types | Finished |
| Manufacturer | Dele |
| Material | High Speed Steel (HSS) |
| Material Type | High Speed Steel (HSS) |
| Minimum Bore Diameter | 0.25 Inches |
| Model | ttand-021 |
| Number of Flutes | 2 |
| Number of Pieces | 6 |
| Part Number | ttand-021 |
| Point Style | Square Point |
| Set Name | Dele 6-Piece Set |
| Shank Type | Square |
| Surface Recommendation | Wood |
| Tool Flute Type | Straight |
| Unit Count | 1.0 Count |

## Product Details

- **Material:** High Speed Steel (HSS)
- **Cutting Diameter:** 0.25 Inches
- **Finish Type:** Finished
- **Shank Type:** Square
- **Brand:** Dele

## Images

![Square Hole Mortise Chisel Drill Bit Tools, HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set Twist Drill, Different Sizes 1/4" 5/16" 3/8" 1/2" 9/16" 5/8"(6pcs) - Image 1](https://m.media-amazon.com/images/I/61cBNCY238L.jpg)
![Square Hole Mortise Chisel Drill Bit Tools, HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set Twist Drill, Different Sizes 1/4" 5/16" 3/8" 1/2" 9/16" 5/8"(6pcs) - Image 2](https://m.media-amazon.com/images/I/8143aOeB0kL.jpg)
![Square Hole Mortise Chisel Drill Bit Tools, HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set Twist Drill, Different Sizes 1/4" 5/16" 3/8" 1/2" 9/16" 5/8"(6pcs) - Image 3](https://m.media-amazon.com/images/I/61iD17sT5tL.jpg)
![Square Hole Mortise Chisel Drill Bit Tools, HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set Twist Drill, Different Sizes 1/4" 5/16" 3/8" 1/2" 9/16" 5/8"(6pcs) - Image 4](https://m.media-amazon.com/images/I/61u2XMqWNGL.jpg)
![Square Hole Mortise Chisel Drill Bit Tools, HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set Twist Drill, Different Sizes 1/4" 5/16" 3/8" 1/2" 9/16" 5/8"(6pcs) - Image 5](https://m.media-amazon.com/images/I/61muMBc+NxL.jpg)

## Questions & Answers

**Q: Can these be used on a heavy duty Drill Press?**
A: I believe you have to have a mortise machine to use a mortise chisel.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Bits
*by D***K on December 6, 2025*

Just what I needed and wanted

### ⭐⭐⭐⭐⭐ Using as a square chisel
*by F***E on January 21, 2024*

I didn’t buy to use with a mortiser. I intended to use to make square holes for my railing balusters. Work well and have stayed sharp. Getting the job done. Now I am looking at getting a mortiser to do more wood work.

### ⭐⭐⭐⭐ Watch out! Get the adapter!
*by G***S on March 18, 2025*

You need to get an adapter for the drill, otherwise these bits will stay loose and not work making the square hole

## Frequently Bought Together

- Square Hole Mortise Chisel Drill Bit Tools, HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set Twist Drill, Different Sizes 1/4" 5/16" 3/8" 1/2" 9/16" 5/8"(6pcs)
- 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
- Square Hole Drill Bit Adapter for Drill Machine Accessory, Easy Installation and Disassembly, Mortising Attachment for Drill Press, Woodworking Mortise Machine, Tenon Drill Bits Fixing Bracket.

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-06*