---
product_id: 96731870
title: "4.5\" x 7/8\" Jumbo Zirconia Type 27 Flap Discs, High Density Sanding and Finishing Wheels for Angle Grinder, 40 Grit, 10-Count"
brand: "benchmark abrasives"
price: "฿7491"
currency: THB
in_stock: true
reviews_count: 12
category: "Benchmark Abrasives"
url: https://www.desertcart.co.th/products/96731870-4-5-x-7-8-jumbo-zirconia-type-27-flap
store_origin: TH
region: Thailand
---

# Premium high-density zirconia for max durability Type 27 flap disc for versatile grinding & finishing 4.5" diameter fits most angle grinders 4.5" x 7/8" Jumbo Zirconia Type 27 Flap Discs, High Density Sanding and Finishing Wheels for Angle Grinder, 40 Grit, 10-Count

**Brand:** benchmark abrasives
**Price:** ฿7491
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your grind game with Benchmark’s zirconia power!

## Quick Answers

- **What is this?** 4.5" x 7/8" Jumbo Zirconia Type 27 Flap Discs, High Density Sanding and Finishing Wheels for Angle Grinder, 40 Grit, 10-Count by benchmark abrasives
- **How much does it cost?** ฿7491 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/96731870-4-5-x-7-8-jumbo-zirconia-type-27-flap)

## Best For

- benchmark abrasives enthusiasts

## Why This Product

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

## Key Features

- • **Bulk Pack Value:** 10-pack bundle designed for pros and DIYers who demand quality and savings.
- • **Unmatched Durability:** European zirconia cloth ensures longer life and consistent abrasion—outlasts typical discs.
- • **Universal Compatibility:** Seamlessly fits Dewalt, Milwaukee, Makita, Bosch & virtually all 4.5" angle grinders.
- • **Pro-Grade Precision Grinding:** Engineered for flawless surface blending, beveling, and rust removal with every spin.
- • **Industrial Strength Performance:** Meets ANSI & EU standards for professional-grade stock removal and finishing.

## Overview

Benchmark Abrasives 4.5" x 7/8" Type 27 flap discs deliver industrial-grade grinding and finishing with premium European zirconia alumina. Compatible with all major 4.5" angle grinders, these 40 grit discs excel in stock removal, surface blending, and rust removal, offering superior durability and consistent performance in a convenient 10-pack.

## Description

Product description Max RPM of Flap Disc Grinding Whee The Max for RPM for these flap sanding discs is 13,000 RPM Max RPM of Flap Disc Grinding Whee The Max for RPM for these flap sanding discs is 13,000 RPM Arbor of Flap Disc Grinder Wheels 7/8” with steel metal center Arbor of Flap Disc Grinder Wheels 7/8” with steel metal center Grains Proprietary blend of premium Zirconia grains Grains Proprietary blend of premium Zirconia grains Bond Abrasive grains resin bonded to X-weight cotton cloth for a smooth cutting experience with these angle grinder attachments Bond Abrasive grains resin bonded to X-weight cotton cloth for a smooth cutting experience with these angle grinder attachments Style Type 27 (Angled Face) flap disc grinding wheels 4 ½ inch size Style Type 27 (Angled Face) flap disc grinding wheels 4 ½ inch size

Review: Great product and value! - Great value! Great product, lasting almost as long as, and almost as good as, the normal name brand we have normally used, but at a good, discounted price compared to name brand. We are a production commercial truck repair shop and will be using this product going forward.
Review: Great value - These are better than any brand I’ve bought at a store. I’ve probably used every brand available locally to me. Not leaps and bounds better than the best I’ve used but the price makes these supreme.

## Features

- MULTIFUNCTIONAL USAGE: Benchmark Abrasives 4.5"" x 7/8"" T27 grinder wheel flap discs excel in various tasks including surface blending, beveling, grinding, deburring, edge chamfering, finishing, stock removal, and rust remover. Designed for both professionals and DIY enthusiasts, these “ 4 1/2 grinding wheels ensure efficient and precise results for every project. These angle grinder attachments are ready for any task at hand.
- PREMIUM ZIRCONIA MATERIAL: Crafted with European zirconia cloth, these grinding wheels 4 1/2 inch flap discs offer superior performance. The uniform particle size and premium blend of ingredients in the zirconia sanding discs ensure consistent and reliable abrasion. Experience enhanced durability and cutting efficiency with every use of these grinder wheels.
- INDUSTRIAL-GRADE QUALITY: Meeting rigorous industrial standards, the “ 4 1/2 flap disc is perfect for 4.5” angle grinders. This angle grinder sanding disc provides versatility, ideal for aggressive stock removal to delicate surface blending. Trust in our “ 4.5 grinding wheel for metal for professional-grade results every time.
- GRINDING DISC WITH VERSATILE APPLICATIONS & COMPATIBILITY: These flapper discs 4 1/2 for angle grinder (4.5 inches) are indispensable in numerous industries such as automotive, transportation, mining, shipbuilding, construction, welding, and fabrication. The Benchmark Abrasives angle grinder flap disc 4 1/2 inch size fits Dewalt, Milwaukee, Makita, Bosch, Metabo, Ryobi, Black & Decker, Kobalt, Craftsman, Skil, Porter Cable, Ridgid 4.5 inch angle grinders and virtually all other brands.
- UNCOMPROMISING QUALITY STANDARDS: All our grinding discs 4 1/2 for angle grinder are manufactured with top-tier materials, exceeding ANSI and EU European Standards. We are committed to delivering high-quality flap wheels 4 1/2 inch discs. Our brand thrives on trust and excellence in every flap disc for angle grinder we offer.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01MU0BBPF |
| Best Sellers Rank | #6,055 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Flap Discs |
| Brand | Benchmark Abrasives |
| Brand Name | Benchmark Abrasives |
| Compatible Devices | Angle Grinder |
| Compatible Disc Grinder Tool Models | DEWALT DWE4559CN |
| Compatible Material | Stainless Steel |
| Construction Type | Grinding |
| Customer Reviews | 4.6 out of 5 stars 244 Reviews |
| Grit Material | Aluminum Oxide, Zirconia, Zirconia Alumina |
| Grit Material Type | Aluminum Oxide, Zirconia, Zirconia Alumina |
| Grit Number | 40 |
| Grit Type | Zirconia |
| Industry Standard Identifier | Type 27 |
| Item Diameter | 4.5 Inches |
| Item Dimensions | 4.5 x 4.5 x 0.04 inches |
| Item Dimensions L x W | 4.5"L x 4.5"W |
| Item Thickness | 0.5 Inches |
| Manufacturer | Benchmark Abrasives |
| Material Type | Zirconia Alumina |
| Model | BM-F4.5SZ40T27HD |
| Number of Items | 10 |
| Part Number | BM-F4.5SZ40T27HD |
| Product Dimensions | 4.5"L x 4.5"W |
| Recommended Uses For Product | Rust Removal |
| Set Name | 40 Grit | 10 Count |
| UPC | 653341412928 |
| Unit Count | 10.0 Count |

## Product Details

- **Brand:** Benchmark Abrasives
- **Compatible Devices:** Angle Grinder
- **Grit Material:** Aluminum Oxide, Zirconia, Zirconia Alumina
- **Grit Type:** Zirconia
- **Product Dimensions:** 4.5"L x 4.5"W

## Images

![4.5" x 7/8" Jumbo Zirconia Type 27 Flap Discs, High Density Sanding and Finishing Wheels for Angle Grinder, 40 Grit, 10-Count - Image 1](https://m.media-amazon.com/images/I/71bvP7yXN2L.jpg)
![4.5" x 7/8" Jumbo Zirconia Type 27 Flap Discs, High Density Sanding and Finishing Wheels for Angle Grinder, 40 Grit, 10-Count - Image 2](https://m.media-amazon.com/images/I/81chN2zIbAL.jpg)
![4.5" x 7/8" Jumbo Zirconia Type 27 Flap Discs, High Density Sanding and Finishing Wheels for Angle Grinder, 40 Grit, 10-Count - Image 3](https://m.media-amazon.com/images/I/61jSr8mxYcL.jpg)
![4.5" x 7/8" Jumbo Zirconia Type 27 Flap Discs, High Density Sanding and Finishing Wheels for Angle Grinder, 40 Grit, 10-Count - Image 4](https://m.media-amazon.com/images/I/717D4rXeg+L.jpg)
![4.5" x 7/8" Jumbo Zirconia Type 27 Flap Discs, High Density Sanding and Finishing Wheels for Angle Grinder, 40 Grit, 10-Count - Image 5](https://m.media-amazon.com/images/I/41Msef2Os+L.jpg)

## Available Options

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

## Questions & Answers

**Q: What is the thickness of these discs?**
A: The thickness of the abrasive area depends on the grit:
- The 80 grit is .497" (12.6mm) thick in the area where the abrasive flaps are and that includes the black mounting wheel/disc
- The 120 grit is .315" (8.1mm) thick in the area where the abrasive flaps are and that includes the black mounting wheel/disc
The thickness of the black mounting wheel/disc is standard at a little less than 1/8"

**Q: which ones do you use for sharpening lawn mower blades?**
A: Type 27 is flat. Type 29 is bevelled. Either could be used to sharpen blades, depending on personal preference.36 or 40 grit is very aggressive for fast stock removal. No need to go any finer than that for mower blades.

**Q: Does this have the quick change nut on it?**
A: These fit any 4.5" angle grinders with the standard lock nut, but they DON NOT have the X-Lock type "teeth" to interface with an X-Lock/Quick Change type angle grinder

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product and value!
*by R***. on December 23, 2025*

Great value! Great product, lasting almost as long as, and almost as good as, the normal name brand we have normally used, but at a good, discounted price compared to name brand. We are a production commercial truck repair shop and will be using this product going forward.

### ⭐⭐⭐⭐⭐ Great value
*by B***D on February 16, 2025*

These are better than any brand I’ve bought at a store. I’ve probably used every brand available locally to me. Not leaps and bounds better than the best I’ve used but the price makes these supreme.

### ⭐⭐⭐⭐⭐ Perfect
*by B***R on August 16, 2025*

Very nice works great

## Frequently Bought Together

- Benchmark Abrasives 4.5" x 7/8" Premium High Density Jumbo Zirconia Type 27 Flap Discs 4 1/2 for Angle Grinder, Sanding Discs, Finishing - Grinding Wheels 4 1/2 inch - (10 Pack) - 40 Grit
- Benchmark Abrasives 6 Inch Aluminum Oxide Thin Type 1 Grinder Cut Off Wheels for Metal and Stainless Steel .045" Thick 7/8" Arbor, Angle Grinder Cutting Disc, Grinding Cutting Wheel - 25 Count
- Benchmark Abrasives Grinder Cut Off Wheels 4 1/2 Inch Aluminum Oxide Thin Type 1 Angle Grinder Cutting Disc for Metal, Stainless Steel - with 7/8" Arbor Hole, Fast Grinder Cutting Wheel - 50 Count

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-06-07*