---
product_id: 93248654
title: "SHDIATOOL Diamond Finger Milling Bit 20MM for Enlarging Holes of Tile, M14"
brand: "shdiatool"
price: "¥6032"
currency: JPY
in_stock: true
reviews_count: 8
category: "Shdiatool"
url: https://www.desertcart.jp/products/93248654-shdiatool-diamond-finger-milling-bit-20mm-for-enlarging-holes-tile
store_origin: JP
region: Japan
---

# Vacuum brazed diamond grit #50/60 Heat-dissipating 4 chip removal holes 20mm diameter precision fit SHDIATOOL Diamond Finger Milling Bit 20MM for Enlarging Holes of Tile, M14

**Brand:** shdiatool
**Price:** ¥6032
**Availability:** ✅ In Stock

## Summary

> 💎 Cut sharper, last longer — the pro’s secret to flawless tile work!

## Quick Answers

- **What is this?** SHDIATOOL Diamond Finger Milling Bit 20MM for Enlarging Holes of Tile, M14 by shdiatool
- **How much does it cost?** ¥6032 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/93248654-shdiatool-diamond-finger-milling-bit-20mm-for-enlarging-holes-tile)

## 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

- • **Heat Dissipation Design:** 4 chip removal holes keep the bit cool, extending tool life during intense use.
- • **Precision 20mm Diameter:** Perfectly sized for enlarging and reshaping tile holes with professional accuracy.
- • **M14 Thread Compatibility:** Seamlessly fits your angle grinder for immediate, hassle-free operation.
- • **Vacuum Brazed Durability:** Engineered for long-lasting sharpness and superior finish on hard surfaces.
- • **Versatile Wet or Dry Use:** Optimized for both wet and dry cutting to suit any job site condition.

## Overview

The SHDIATOOL Diamond Finger Milling Bit 20MM is a high-performance grinding accessory designed for enlarging and reshaping holes in porcelain, ceramic, granite, and marble tiles. Featuring a durable vacuum brazed diamond grit and a heat-dissipating design with 4 chip removal holes, it ensures long service life and smooth finishes. Compatible with M14 thread angle grinders and suitable for both wet and dry use, this bit is the ultimate precision tool for professional tile installers and DIY enthusiasts aiming for flawless results.

## Description

SHDIATOOL Diamond Finger Milling Bit 20MM for Enlarging Holes of Tile, M14 | Diamond Grinding Bit for Shaping Grinding Edging Exsiting Holes of Porcelain Tile Ceramic Marble Granite for Angle Grinder : desertcart.co.uk: DIY & Tools

Review: Good Quality works well! - Excellent bit Works well even on 20mm exterior porcelain!
Review: Fab little tool - Ground out several smooth curves and pipe holes in biscuit tile with no issues using my angle grinder and this bit. Quite slow on the curves if removing lots of material, but much easier than trying to do intricate cuts with a tile nipper. For speed, you can rough out with the tile nipper, and then finish/smooth with this guy. Remember to keep cuts lubricated with water to flush away material and prevent overheating. Still got plenty more life in the bit because I kept it lubricated.

## Features

- 【Size】Diameter: 20mm, Total length: 65mm, Working Depth: 50mm, M14 Thread, Grit: #50/60
- 【Vacuum Brazed Technology】Help to be durable and have a long sevice life with better finish
- 【Special Design】4 chip removal holes and the interior of the matrix. Designed for heat dissipation and provides longer working life. Dry or Wet Use
- 【Recommended Machine】: Suitables for M14 Thread angle grinder. Recommended RPM: 6000, maximum RPM: 11000. If you want to fit it on drills or other machine, you need an adapter, such as SDS,Hex, Round Plus Shank. Direct drilling is not recommended
- 【Multiple Application】Both Dry or Wet use,to Enlarge and Reshape previously cut holes in Porcelain Tiles, Hard Ceramic Tiles, Granite, Marble & Engineered Stones,and also be used to notch edges of tile to accommodate for pipes or wiring

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07G7SZJ7P |
| Best Sellers Rank | 169,407 in DIY & Tools ( See Top 100 in DIY & Tools ) 500 in Hole Saws |
| Brand | SHDIATOOL |
| Country Of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 187 Reviews |
| Cutting Angle String | 6E+1 Degrees |
| Cutting Diameter | 20 Millimetres |
| Cutting angle string | 6E+1 Degrees |
| Cutting diameter | 20 Millimetres |
| Finish Types | Uncoated, dry |
| Finish type | Uncoated , dry |
| Item Dimensions | 20 x 20 x 70 millimetres |
| Item Highlight | Diamond Grinding Bit for Shaping Grinding Edging Exsiting Holes of Porcelain Tile Ceramic Marble Granite for Angle Grinder |
| Manufacturer | SHANGHAI DIATOOL CO., LTD. |
| Manufacturer Part Number | A867120M14 |
| Material | Artificial Diamond |
| Model Number | A867120M14 |
| Number of Flutes | 2 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Point Style | Diamond Point |
| Set Name | Single |
| Shank Type | Round |
| Shank type | Round |
| Surface Recommendation | Concrete, Glass, Porcelain, Rock, Tile |
| Tool Flute Type | Spiral |
| UPC | 718760502442 |
| Unit Count | 1.0 count |

## Product Details

- **Material:** Artificial Diamond
- **Shank diameter:** 10 Millimetres
- **Cutting diameter:** 20 Millimetres
- **Finish type:** Uncoated, dry
- **Shank type:** Round

## Images

![SHDIATOOL Diamond Finger Milling Bit 20MM for Enlarging Holes of Tile, M14 - Image 1](https://m.media-amazon.com/images/I/61J5O8IS9vL.jpg)
![SHDIATOOL Diamond Finger Milling Bit 20MM for Enlarging Holes of Tile, M14 - Image 2](https://m.media-amazon.com/images/I/61pm6uUaT6L.jpg)
![SHDIATOOL Diamond Finger Milling Bit 20MM for Enlarging Holes of Tile, M14 - Image 3](https://m.media-amazon.com/images/I/614c5124tqL.jpg)
![SHDIATOOL Diamond Finger Milling Bit 20MM for Enlarging Holes of Tile, M14 - Image 4](https://m.media-amazon.com/images/I/61cW8lnXtbL.jpg)
![SHDIATOOL Diamond Finger Milling Bit 20MM for Enlarging Holes of Tile, M14 - Image 5](https://m.media-amazon.com/images/I/61hJy8ae8NL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good Quality works well!
*by J***E on 5 July 2026*

Excellent bit Works well even on 20mm exterior porcelain!

### ⭐⭐⭐⭐⭐ Fab little tool
*by T***Y on 31 August 2020*

Ground out several smooth curves and pipe holes in biscuit tile with no issues using my angle grinder and this bit. Quite slow on the curves if removing lots of material, but much easier than trying to do intricate cuts with a tile nipper. For speed, you can rough out with the tile nipper, and then finish/smooth with this guy. Remember to keep cuts lubricated with water to flush away material and prevent overheating. Still got plenty more life in the bit because I kept it lubricated.

### ⭐⭐⭐⭐ Not a bad tool but it does wear
*by P***S on 16 September 2020*

I purchased this diamond cutter to open up the vertical mortar joints on a wall I'm pointing. Some of the original joints were virtually none existing soe were about 8mm. As I was finishing off with a 10mm pointing trowel I needed a tool that fitted the angle grinder to open up the joints. This has worked really well although there is some wear on the tool as can be seen in the photo.however as the tool is 50mm long and I'm removing 20-30mm of the old mortar (as per building regs for re-pointing) it isn't a problem. The wear has occurred due to the high temperature generated buy some of the harder bricks. Also, the flats slot for my adjustable wrench was too tight so I had to file the tool to allow it to be nipped up in the grinder. I would recommend this tool.

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**Shop now:** [https://www.desertcart.jp/products/93248654-shdiatool-diamond-finger-milling-bit-20mm-for-enlarging-holes-tile](https://www.desertcart.jp/products/93248654-shdiatool-diamond-finger-milling-bit-20mm-for-enlarging-holes-tile)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-05*