---
product_id: 83145680
title: "SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm"
brand: "shdiatool"
price: "NT$2359"
currency: TWD
in_stock: true
reviews_count: 13
category: "Shdiatool"
url: https://www.desertcart.tw/products/83145680-shdiatool-diamond-grinding-cup-wheel-4-1-2-inch-granite
store_origin: TW
region: Taiwan
---

# 30/40 coarse diamond grit for aggressive grinding Fits 7/8 inch arbor, max 8063 RPM Vacuum brazed tech for durability & speed SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm

**Brand:** shdiatool
**Price:** NT$2359
**Availability:** ✅ In Stock

## Summary

> 💎 Grind like a pro, last like a legend.

## Quick Answers

- **What is this?** SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm by shdiatool
- **How much does it cost?** NT$2359 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/83145680-shdiatool-diamond-grinding-cup-wheel-4-1-2-inch-granite)

## 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

- • **Durability Meets Speed:** Vacuum brazed diamond grit delivers faster grinding and longer life without compromise
- • **Precision Fit for Pro Tools:** Designed for 7/8 inch arbor angle grinders ensuring seamless compatibility
- • **Unmatched Multi-Surface Power:** Effortlessly grinds granite, marble, iron, steel & masonry with dry or wet use
- • **Trusted by Ironworkers & Artisans:** Proven reliability for heavy-duty weld grinding, stone carving, and metal prep
- • **Coarse Grit for Aggressive Performance:** 30/40 diamond grit cuts through tough materials with minimal pressure

## Overview

The SHDIATOOL 4-1/2 inch Diamond Grinding Cup Wheel features a robust 30/40 coarse diamond grit vacuum brazed for superior durability and speed. Compatible with 7/8 inch arbor angle grinders and rated up to 8063 RPM, it excels in dry or wet grinding across granite, marble, iron, steel, and masonry. Engineered for professionals demanding aggressive, long-lasting performance on diverse surfaces.

## Description

Buy SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm: Surface Grinding Wheels - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Consistent, sturdy, long lasting, effortless - Used this disk for roughly three months or so intentionally trying to kill it, its lost some effectiveness in areas where its been heavily used but still works very well with a bit of pressure and is basically new in areas of the disk that haven't seen as much use. I'm an Ironworker and it has been invaluable as a tool, it rips through galvanization on iron without putting pits in metal, can be used to make cuts if you're in a bind just have to go slow, and can reliable grind down welds flush with existing metal. It is kind of heavy and thick so the only worry long term is it damaging your grinder or wearing it out, but with that it dose not require hardly any pressure at all to do its job so your tool will never really be bogged down by it so im not sure on that yet, ill update this if I can in the future. Pretty solid would recommend for the job scope of Ironworking.
Review: good - This worked better than anticipated. Ive only used it for one project, carving some limestone, but it ate it pretty fast and seemed to hold up well. I dont have anything else to compare it to in terms of carbide/stone carving, but it cut as good or better than a 36 grit flap disc cutting wood.

## Features

- 1.Application: Dry or Wet working,Multi-purpose for iron steel granite marble natural stone ceramic and even steel grinding
- 2. Size: 1pc Diameter 115mm (4-1/2 inch), Bore 22.23mm (7/8 inch),Diamond grit 30/40
- 3. High Quality: 30/40 Coarse high quality Diamond grain ensure aggressive working performance
- 4. Durablity: Vacuum Brazed Technology provide faster grinding Speed and longer working life and safer operation
- 5. Machine: 7/8 inch arbor is suitable for angle grinder, the recommend speed is 8063 RPM

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B078XS2LTM |
| Best Sellers Rank | #38,174 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #64 in Grinding Discs |
| Brand | SHDIATOOL |
| Compatible Devices | Angle Grinder |
| Construction Type | Grinding |
| Date First Available | January 10, 2018 |
| Grit Material | Ceramic, Diamond |
| Grit Number | 40 |
| Grit Type | Coarse |
| Is Discontinued By Manufacturer | No |
| Item Diameter | 4.5 Inches |
| Item Thickness | 0.04 Inches |
| Item Weight | 10.2 ounces |
| Manufacturer | SHANGHAI DIATOOL CO., LTD. |
| Maximum Rotational Speed | 8063 RPM |
| Product Dimensions | 4.5"L x 4.5"W |
| Recommended Uses For Product | Grinding |
| UPC | 718760494778 |

## Product Details

- **Brand:** SHDIATOOL
- **Compatible Devices:** Angle Grinder
- **Grit Material:** Ceramic, Diamond
- **Grit Type:** Coarse
- **Product Dimensions:** 4.5"L x 4.5"W

## Images

![SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm - Image 1](https://m.media-amazon.com/images/I/810U1aZ1m6L.jpg)
![SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm - Image 2](https://m.media-amazon.com/images/I/61OBH9i-bbL.jpg)
![SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm - Image 3](https://m.media-amazon.com/images/I/61G4uZQWB0L.jpg)
![SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm - Image 4](https://m.media-amazon.com/images/I/71cqlzcRohL.jpg)
![SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm - Image 5](https://m.media-amazon.com/images/I/71l84KDNqAL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Consistent, sturdy, long lasting, effortless
*by C***E on February 2, 2026*

Used this disk for roughly three months or so intentionally trying to kill it, its lost some effectiveness in areas where its been heavily used but still works very well with a bit of pressure and is basically new in areas of the disk that haven't seen as much use. I'm an Ironworker and it has been invaluable as a tool, it rips through galvanization on iron without putting pits in metal, can be used to make cuts if you're in a bind just have to go slow, and can reliable grind down welds flush with existing metal. It is kind of heavy and thick so the only worry long term is it damaging your grinder or wearing it out, but with that it dose not require hardly any pressure at all to do its job so your tool will never really be bogged down by it so im not sure on that yet, ill update this if I can in the future. Pretty solid would recommend for the job scope of Ironworking.

### ⭐⭐⭐⭐⭐ good
*by E***N on January 6, 2026*

This worked better than anticipated. Ive only used it for one project, carving some limestone, but it ate it pretty fast and seemed to hold up well. I dont have anything else to compare it to in terms of carbide/stone carving, but it cut as good or better than a 36 grit flap disc cutting wood.

### ⭐⭐⭐⭐⭐ Long-lasting and versatile
*by B***N on April 8, 2025*

Hollowed out stones for pots and a large boulder for a birdbath. Chews through hard sandstone and even worked well on rhyolite (harder than granite.) Method involved parallel cutting with diamond wheel, knocking out remaining stone fins, and then finishing by shaping and smoothing with this disc. You can actually carve stone with this "flying saucer" profile. Highly recommended.

## Frequently Bought Together

- SHDIATOOL Diamond Grinding Cup Wheel 4-1/2 Inch for Granite Marble Iron Steel Masonry Convex Vacuum Brazed Grinding Disc Fits 7/8 Inch Arbor 115mm
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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-03-18*