---
product_id: 75472856
title: "SHDIATOOL Diamond Core Drill Bits 1-3/8 Inch for Hard Stone Concrete Marble Granite Brick Laser Welded Dry or Wet Hole Saws 35mm"
brand: "shdiatool"
price: "284.85 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Shdiatool"
url: https://www.desertcart.tn/products/75472856-shdiatool-diamond-core-drill-bits-1-3-8-inch-hard
store_origin: TN
region: Tunisia
---

# Laser welded diamond edge for ultimate durability Dry or wet drilling for extended bit lifespan 35mm (1-3/8 inch) precision cutting diameter SHDIATOOL Diamond Core Drill Bits 1-3/8 Inch for Hard Stone Concrete Marble Granite Brick Laser Welded Dry or Wet Hole Saws 35mm

**Brand:** shdiatool
**Price:** 284.85 DT
**Availability:** ✅ In Stock

## Summary

> 💎 Drill like a pro, last like a legend!

## Quick Answers

- **What is this?** SHDIATOOL Diamond Core Drill Bits 1-3/8 Inch for Hard Stone Concrete Marble Granite Brick Laser Welded Dry or Wet Hole Saws 35mm by shdiatool
- **How much does it cost?** 284.85 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/75472856-shdiatool-diamond-core-drill-bits-1-3-8-inch-hard)

## Best For

- shdiatool enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Laser welded diamond segments ensure long-lasting performance even under heavy use
- • **Pro-Grade Performance:** Ideal for hard stone, brick, and engineering stone—trusted by professionals for flawless results
- • **Versatile Compatibility:** Fits 5/8 inch-11 angle grinders and adapters for SDS, hex, and round shanks
- • **Cool & Efficient Drilling:** Supports wet drilling to drastically extend bit life and maintain peak cutting speed
- • **Unmatched Precision Cutting:** 35mm diameter engineered for flawless holes in granite, marble, and concrete

## Overview

The SHDIATOOL Diamond Core Drill Bit features a 35mm laser welded diamond cutting edge designed for precision drilling in hard materials like granite, marble, concrete, and brick. Compatible with 5/8 inch-11 angle grinders and various adapters, it supports both dry and wet drilling to maximize durability and cutting efficiency. Engineered for professional-grade performance, this core bit delivers clean, accurate holes while maintaining exceptional longevity under demanding conditions.

## Description

SHDIATOOL Diamond Core Drill Bits 1-3/8 Inch for Hard Stone Concrete Marble Granite Brick Laser Welded Dry or Wet Hole Saws 35mm - desertcart.com

Review: Excellent core bit - I used this to core drill 6 holes on my granite tread steps, it works great with the corded hand grinder! I use the garden hose to spray water as I’m drilling. The core bit still looking great with no signs of damage! It exceeded my expectations! Excellent product!
Review: surprisingly good value for an imported tool - Wasn't sure how well this was going to work but was pleasantly surprised with results. I bought two of these SHDiamtool core drills, a 50mm and a 32mm for custom work on sandstone blocks 2 to 2-1/4" thick. I had 12 blocks that needed one 2" hole drilled completely thru and four 1-1/4" holes drilled an inch deep, not all the way thru. These drills do not come with a pilot drill, so I made a template out of plywood and 2x4s with the same hole sizes and layout as I needed for the blocks. That made it easy to be sure the drill didn't skip or wander when making initial contact with surface of stone. I used a drill press with water coolant and checked a core drill speed chart to make sure I was in the ball park for spindle speed - used 1080 rpm for both sizes - and these things cut thru sandstone really well and quite quickly using only moderate downfeed pressure. This pair of core drills performed well and did exactly what I needed - I would buy them again, but they hardly show any wear on them after 12 holes with the 50mm and 48 half depth holes on the 32mm. Make sure you have or buy the correct arbor for them and you should have no problems if you keep them cool with water, use the correct spindle speed and don't use too much down force.

## Features

- 1-3/8 inch(35mm) Laser Welded Diamond Dry Drilling Core Bits
- Diameter:35mm(1-3/8 inch), Total length: 100mm, Thread: 5/8 inch-11
- Dry or Wet Drilling - use wet will greatly prolong the segment life
- Designed for drilling hard granite, marble, engineering stone, concrete, brick
- Easily operate on 5/8 inch-11 Angle Grinder; Need an adapter for drill or other machine, such as SDS,hex,Round plus shank

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B076LCFN4Y |
| Best Sellers Rank | #23,195 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #9 in Core Drill Bits |
| Brand Name | SHDIATOOL |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,332) |
| Cutting Angle String | 30 Degrees |
| Cutting Diameter | 35 Millimeters |
| Finish Types | Steel |
| Manufacturer | SHANGHAI DIATOOL CO., LTD. |
| Material Type | Artificial diamond and Steel body |
| Number of Flutes | 2 |
| Shank Type | Threaded |
| Surface Recommendation | Stone |
| Tool Flute Type | Straight |
| UPC | 718760495270 |
| Unit Count | 1.0 Count |

## Product Details

- **Cutting Angle String:** 30 Degrees
- **Cutting Diameter:** 35 Millimeters
- **Finish Type:** Steel
- **Material:** Artificial diamond and Steel body
- **Shank Type:** Threaded

## Images

![SHDIATOOL Diamond Core Drill Bits 1-3/8 Inch for Hard Stone Concrete Marble Granite Brick Laser Welded Dry or Wet Hole Saws 35mm - Image 1](https://m.media-amazon.com/images/I/61Et7MMnkUL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent core bit
*by M***D on November 4, 2025*

I used this to core drill 6 holes on my granite tread steps, it works great with the corded hand grinder! I use the garden hose to spray water as I’m drilling. The core bit still looking great with no signs of damage! It exceeded my expectations! Excellent product!

### ⭐⭐⭐⭐⭐ surprisingly good value for an imported tool
*by A***R on May 19, 2020*

Wasn't sure how well this was going to work but was pleasantly surprised with results. I bought two of these SHDiamtool core drills, a 50mm and a 32mm for custom work on sandstone blocks 2 to 2-1/4" thick. I had 12 blocks that needed one 2" hole drilled completely thru and four 1-1/4" holes drilled an inch deep, not all the way thru. These drills do not come with a pilot drill, so I made a template out of plywood and 2x4s with the same hole sizes and layout as I needed for the blocks. That made it easy to be sure the drill didn't skip or wander when making initial contact with surface of stone. I used a drill press with water coolant and checked a core drill speed chart to make sure I was in the ball park for spindle speed - used 1080 rpm for both sizes - and these things cut thru sandstone really well and quite quickly using only moderate downfeed pressure. This pair of core drills performed well and did exactly what I needed - I would buy them again, but they hardly show any wear on them after 12 holes with the 50mm and 48 half depth holes on the 32mm. Make sure you have or buy the correct arbor for them and you should have no problems if you keep them cool with water, use the correct spindle speed and don't use too much down force.

### ⭐⭐⭐⭐⭐ Worked as advertised, 4in diameter went through tile and 3in of concrete with ease.
*by A***R on April 28, 2024*

I can't speak to it's longevity or durability as I only needed it for this one job, but it's a well built tool. It went through the tile and concrete in a couple minutes. Wasn't great at going through the wood. It pretty much burned it's way through sub floor. For this 4in diameter I recommend using a plug-in grinder for the power. Overall happy with the performance and ease of use. Definitely use earplugs, a mask and safety goggles. It makes a lot of dust. Follow the instructions. The hole was exactly where I wanted it, did not walk off center at all.

## Frequently Bought Together

- SHDIATOOL Diamond Core Drill Bits 1-3/8 Inch for Hard Stone Concrete Marble Granite Brick Laser Welded Dry or Wet Hole Saws 35mm
- SHDIATOOL Adapter for Core Bits 5/8-Inch-11 to M14 Thread

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-04-23*