---
product_id: 79508729
title: "Wet Drill Core Bits for Hard Concrete, Brick, and Block - 4.25\" Diameter 1-1/4\"-7 Threaded #30/40 Diamond Grits"
brand: "ediamondtools"
price: "€ 237.00"
currency: EUR
in_stock: true
url: https://www.desertcart.es/products/79508729-wet-drill-core-bits-for-hard-concrete-brick-and-block
store_origin: ES
region: Spain
---

# Diamond Grits 14" Depth 1-1/4" Arbor Wet Drill Core Bits for Hard Concrete, Brick, and Block - 4.25" Diameter 1-1/4"-7 Threaded #30/40 Diamond Grits

**Brand:** ediamondtools
**Price:** € 237.00
**Availability:** ✅ In Stock

## Summary

> 💪 Drill Like a Pro: Conquer Concrete with Confidence!

## Quick Answers

- **What is this?** Wet Drill Core Bits for Hard Concrete, Brick, and Block - 4.25" Diameter 1-1/4"-7 Threaded #30/40 Diamond Grits by ediamondtools
- **How much does it cost?** € 237.00 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/79508729-wet-drill-core-bits-for-hard-concrete-brick-and-block)

## Best For

- ediamondtools enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Heavy-duty diamond concentration for extended core life.
- • **Professional Grade:** Ideal for contractors and DIY enthusiasts alike.
- • **Unleash Your Power:** Drill through hard concrete and masonry with ease!
- • **Precision Engineering:** Designed for rotary mode, ensuring optimal performance.
- • **Versatile Applications:** Perfect for concrete, brick, and block drilling.

## Overview

The Wet Drill Core Bits are engineered for professionals, featuring a 4.25" diameter and 1-1/4"-7 threaded arbor. With a robust diamond grit design, these bits are perfect for drilling through hard concrete, brick, and block, achieving a maximum depth of 14". Ideal for wet/rotary mode applications, they ensure efficient and durable performance for all your drilling needs.

## Description

Full description not available

## Features

- MULTIPURPOSE - designed to drill concrete, concrete with light steel reinforcement or hard masonry
- HEAVY DUTY - embedded diamond concentration guarantees longer core life and efficient drilling
- ARBOR SIZE - 1-1/4"-7 threaded arbor
- DRILLING DEPTH - 14" drilling depth
- WET/ROTARY MODE ONLY - recommended to use with handheld core drills or dedicated core drill rigs (rotary mode only, no wire mesh drilling)

## Product Details

- **Material:** Diamond
- **Cutting Diameter:** 4.25 Inches
- **Finish Type:** Diamond
- **Shank Type:** Threaded
- **Cutting Angle String:** 6E+1 Degrees

## Images

![Wet Drill Core Bits for Hard Concrete, Brick, and Block - 4.25" Diameter 1-1/4"-7 Threaded #30/40 Diamond Grits - Image 1](https://m.media-amazon.com/images/I/51e46z6PQkL.jpg)
![Wet Drill Core Bits for Hard Concrete, Brick, and Block - 4.25" Diameter 1-1/4"-7 Threaded #30/40 Diamond Grits - Image 2](https://m.media-amazon.com/images/I/91yU9unHgrL.jpg)
![Wet Drill Core Bits for Hard Concrete, Brick, and Block - 4.25" Diameter 1-1/4"-7 Threaded #30/40 Diamond Grits - Image 3](https://m.media-amazon.com/images/I/91r2CGuqRfL.jpg)
![Wet Drill Core Bits for Hard Concrete, Brick, and Block - 4.25" Diameter 1-1/4"-7 Threaded #30/40 Diamond Grits - Image 4](https://m.media-amazon.com/images/I/91QlB5VQ3rL.jpg)
![Wet Drill Core Bits for Hard Concrete, Brick, and Block - 4.25" Diameter 1-1/4"-7 Threaded #30/40 Diamond Grits - Image 5](https://m.media-amazon.com/images/I/818fRu3nh7L.jpg)

## Available Options

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

## Questions & Answers

**Q: Is the 1.75" outside diameter? What diameter core does it recover?**
A: The size listed if for the actual size of the hole it will drill.  These are not intended to actually produce an intact core sample although they do to an extent.
The core size diameter is not listed.  I used the 1-1/4 " size to drill through 7" of granite.  The core was nice and smooth but broke off about every 2 to 3 inches which made for easier drilling.    Maybe with a larger size the core would hold up better.

**Q: Will this fit in a cordless drill?**
A: I dont see why not, im sure the Hulk could hold it in place, the drill made for this weighs 75lbs plus.

**Q: Do i need a core drilling machine for the 5" core drill to go through basement floor or will a hd 1/2" drill work well enough?**
A: Ive done my coring using a 1/2 inch veritable speed right angle drill, plenty of very slow running water ,  fyi 6-1/4” deep was my deepest hole core.  It was not inches in circumference. I also bought the recommended shank.  I hope this helps feel free to as anything else Re drill bit.

**Q: Looking for a 1 1/8” wet core bit for drilling hard reinforced concrete. 20” drilling depth**
A: You need a carbide drill bit for a hammer drill, not a hole saw bit, for 1,1/8 are pricey & keep in mind if it’s reinforced as you stated you have to be careful, if you hit rebar with the diamond tip will break making the bit useless ,  imo

## Frequently Bought Together

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-02-21*