---
product_id: 13327836
title: "DEWALT Flap Disc, Zirconia, 4-1/2-Inch x 7/8-Inch, 80-Grit (DW8309)"
brand: "dewalt"
price: "3926 som"
currency: KGS
in_stock: true
reviews_count: 13
category: "Dewalt"
url: https://www.desertcart.kg/products/13327836-dewalt-flap-disc-zirconia-4-1-2-inch-x-7
store_origin: KG
region: Kyrgyzstan
---

# 15x longer abrasive life 3x faster material removal 20-25° grinding angle precision DEWALT Flap Disc, Zirconia, 4-1/2-Inch x 7/8-Inch, 80-Grit (DW8309)

**Brand:** dewalt
**Price:** 3926 som
**Availability:** ✅ In Stock

## Summary

> ⚙️ Turn rough steel into showroom shine—grind like a pro, last like a legend!

## Quick Answers

- **What is this?** DEWALT Flap Disc, Zirconia, 4-1/2-Inch x 7/8-Inch, 80-Grit (DW8309) by dewalt
- **How much does it cost?** 3926 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/13327836-dewalt-flap-disc-zirconia-4-1-2-inch-x-7)

## Best For

- dewalt enthusiasts

## Why This Product

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

## Key Features

- • **Endurance That Outlasts:** Premium abrasive cloth delivers up to 15x longer life—work smarter, not harder.
- • **Precision Grinding Angle:** Type 29 fiberglass backing ensures optimal 20-25° angle for flawless surface finishing.
- • **Trusted DEWALT Durability:** Backed by a 4.7-star rating and engineered for pros who demand quality and longevity.
- • **Turbocharged Zirconia Grit:** Experience 3x faster metal removal and power through projects with unmatched speed.
- • **Cool & Consistent Performance:** Runs cooler to prevent overheating and disc shredding—reliable for every grind.

## Overview

The DEWALT DW8309 4-1/2" x 7/8" 80 grit Zirconia flap disc combines high-performance zirconia grit with premium abrasive cloth for 3x faster material removal and 15x longer life than standard discs. Its Type 29 fiberglass backing provides a precise 20-25° grinding angle, ensuring smooth, cool, and consistent grinding on metal surfaces. Ideal for professionals seeking durability and efficiency in surface finishing and weld cleanup.

## Description

Product Description DEWALT DW8309 4-1/2 x 7/8 80 grit Zirconia angle Grinder flap disc. From the Manufacturer DEWALT DW8309 4-1/2" x 7/8" 80 Grit Zirconia Angle Grinder Flap Disc

Review: Turns Rusty Metal Into Showroom Shine - This flap disc is the real deal. DEWALT slapped some zirconia grit on a wheel and basically handed you a surface-smoothing weapon of mass reduction. Whether you’re cleaning up welds, smoothing edges, or shaving down that "oops" cut you swore was straight—this thing handles it like a champ. Durability? Let’s just say it outlasted my attention span and my playlist. It cuts smooth, runs cool, and doesn’t shred itself to pieces halfway through a job like those bargain-bin brands. Put it on your grinder and let it work its magic. You’ll be turning rough steel into buttered toast in no time.
Review: Good price and High Quality - I used this along with an angle grinder to sharpen my lawn mower blades. It did a great job and I did not notice any damage to the disc after the job was done. I anticipate being able to reuse this disc for many more blade sharpenings. It was able to successfully sharpen the blade and I knew it was working from all the sparks that were generated at the time. I think this is a great value.

## Features

- Zirconia grit enables 3x faster material removal than fiber resin metal sanding discs
- Premium abrasive cloth provides up to 15 x longer life than fiber resin metal sanding discs
- Type 29 fiberglass backing provides grinding angle of 20-25 degrees

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BQO76Q |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #261,318 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #66 in Power Sander Fiber Backed Abrasive Discs |
| Brand | DEWALT |
| Color | Multi |
| Compatible Devices | Angle Grinder |
| Compatible Disc Grinder Tool Models | DEWALT DCG416B |
| Construction Type | Grinding |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,056) |
| Cutting Diameter | 4.5 Inches |
| Date First Available | April 20, 2005 |
| Finish | Brushed |
| Global Trade Identification Number | 00028877310459 |
| Grit Material | Zirconia |
| Grit Number | 80 |
| Grit Type | Medium |
| Included Components | 4-1/2" x 7/8" 80 Grit Zirconia Flap Disc |
| Is Discontinued By Manufacturer | No |
| Item Diameter | 4.5 Inches |
| Item Package Quantity | 1 |
| Item Thickness | 4.5 Inches |
| Item Weight | 1.6 ounces |
| Item model number | DW8309 |
| Manufacturer | DEWALT |
| Material | Blend |
| Measurement System | Metric |
| Part Number | DW8309 |
| Pattern | Solid |
| Power Source | Hand Powered |
| Product Dimensions | 4.5"L x 4.5"W |
| Recommended Uses For Product | Grinding |
| Shape | Rectangular |
| Size | 1 Count |
| Style | 80G 7/8-Inch Hub |
| UPC | 028877310459 |

## Product Details

- **Brand:** DEWALT
- **Compatible Devices:** Angle Grinder
- **Grit Material:** Zirconia
- **Grit Type:** Medium
- **Product Dimensions:** 4.5"L x 4.5"W

## Images

![DEWALT Flap Disc, Zirconia, 4-1/2-Inch x 7/8-Inch, 80-Grit (DW8309) - Image 1](https://m.media-amazon.com/images/I/41OW0lL-81L.jpg)
![DEWALT Flap Disc, Zirconia, 4-1/2-Inch x 7/8-Inch, 80-Grit (DW8309) - Image 2](https://m.media-amazon.com/images/I/51u4KaIC4CL.jpg)
![DEWALT Flap Disc, Zirconia, 4-1/2-Inch x 7/8-Inch, 80-Grit (DW8309) - Image 3](https://m.media-amazon.com/images/I/711wzPIMwuL.jpg)
![DEWALT Flap Disc, Zirconia, 4-1/2-Inch x 7/8-Inch, 80-Grit (DW8309) - Image 4](https://m.media-amazon.com/images/I/81TkzbJ5akL.jpg)

## Questions & Answers

**Q: is it 4-1/2 x 1/4 x 7/8?  I notice it is only described as 4-1/2 x 7/8.  Pls help.  Tks**
A: Yes. 41/2 diameter x 1/4" thick with a 7/8" hole ( bore)

**Q: Is there an adapter to use on a 5/8 inch grinder**
A: should use same arbor back flange and securing nut as an ordinary grinding wheel without threaded arbor, usually comes with grinder

**Q: I want to shave a door down about 3/8 inch.  Would this work for the job?**
A: mostly, this is used for grinding metals. To cut 3/8" wood, you need a saw not a grinder.
Thanks

**Q: OK for glazed tile?**
A: I think it you used it with a variable speed grinder at the slowest speed it would work for cleaning up the edges. For glass I just use a random orbital electric sander with 100 grit, since glaze is essentially glass, I would use caution on a rough grit.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Turns Rusty Metal Into Showroom Shine
*by M***T on August 4, 2025*

This flap disc is the real deal. DEWALT slapped some zirconia grit on a wheel and basically handed you a surface-smoothing weapon of mass reduction. Whether you’re cleaning up welds, smoothing edges, or shaving down that "oops" cut you swore was straight—this thing handles it like a champ. Durability? Let’s just say it outlasted my attention span and my playlist. It cuts smooth, runs cool, and doesn’t shred itself to pieces halfway through a job like those bargain-bin brands. Put it on your grinder and let it work its magic. You’ll be turning rough steel into buttered toast in no time.

### ⭐⭐⭐⭐⭐ Good price and High Quality
*by D***D on May 27, 2024*

I used this along with an angle grinder to sharpen my lawn mower blades. It did a great job and I did not notice any damage to the disc after the job was done. I anticipate being able to reuse this disc for many more blade sharpenings. It was able to successfully sharpen the blade and I knew it was working from all the sparks that were generated at the time. I think this is a great value.

### ⭐⭐⭐⭐⭐ Work awesome
*by K***I on July 25, 2025*

These work great. They don't damage wood and really strip the varnish without gumming up

## Frequently Bought Together

- DEWALT Flap Disc, Zirconia, 4-1/2-Inch x 7/8-Inch, 80-Grit (DW8309)
- DEWALT 4-1/2 Inch Cut-Off Wheel, Angle Grinder Cutting Disc, General Purpose, 5-Pack (DW8062B5)
- DEWALT Diamond Blade for Masonry, Dry Cutting, Continuous Rim, 7/8-Inch Arbor, 4-1/2-Inch (DW4725)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-01-29*