---
product_id: 13327836
title: "DEWALT Flap Disc, Zirconia, 4-1/2-Inch x 7/8-Inch, 80-Grit (DW8309)"
brand: "dewalt"
price: "KD 3.40"
currency: KWD
in_stock: true
reviews_count: 13
category: "Dewalt"
url: https://www.desertcart.com.kw/products/13327836-dewalt-flap-disc-zirconia-4-1-2-inch-x-7
store_origin: KW
region: Kuwait
---

# 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:** KD 3.40
**Availability:** ✅ In Stock

## Summary

> ⚡ Cut faster, last longer, finish sharper — own the grind like a pro!

## 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?** KD 3.40 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/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

- • **Versatile Metal Mastery:** From rust removal to weld smoothing, this disc transforms rough steel into showroom shine effortlessly.
- • **Precision Grinding Backing:** Type 29 fiberglass backing delivers the perfect 20-25° angle for flawless finishes every time.
- • **Turbocharged Zirconia Grit:** Experience lightning-fast metal removal that leaves competitors in the dust.
- • **Trusted Pro-Grade Performance:** Join thousands of pros who rely on DEWALT’s DW8309 for consistent, high-quality results.
- • **Endurance That Outlasts Your Projects:** Premium abrasive cloth ensures up to 15 times longer life—work smarter, not harder.

## Overview

The DEWALT DW8309 4-1/2" x 7/8" 80 Grit Zirconia Flap Disc combines high-performance zirconia grit with a durable abrasive cloth for 3x faster material removal and 15x longer life than standard discs. Its Type 29 fiberglass backing ensures an optimal 20-25° grinding angle, making it ideal for metal smoothing, rust removal, and weld finishing with professional-grade reliability.

## 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 |
| Best Sellers Rank | #27,232 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #5 in Power Sander Fiber Backed Abrasive Discs |
| Brand Name | DEWALT |
| Compatible Devices | Angle Grinder |
| Compatible Material | Metal |
| Construction Type | Grinding |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,115) |
| Global Trade Identification Number | 00028877310459 |
| Grit Material Type | Zirconia |
| Grit Number | 80 |
| Grit Type | Medium |
| Included Components | 4-1/2" x 7/8" 80 Grit Zirconia Flap Disc |
| Industry Standard Identifier | Type 29 |
| Item Dimensions | 4.5 x 4.5 x 0.9 inches |
| Item Dimensions L x W | 4.5"L x 4.5"W |
| Item Thickness | 4.5 Inches |
| Item Type Name | 4-1/2 X 7/8 80G T29 HP FLAP |
| Item Weight | 0.1 Pounds |
| Manufacturer | DEWALT |
| Material Type | Blend |
| Model | DW8309 |
| UPC | 028877310459 |
| Unit Count | 1.0 Count |

## 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/81VZYw13RkL.jpg)

## Available Options

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

## 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.

### ⭐⭐⭐⭐⭐ Great Buy
*by A***R on October 18, 2023*

Purchased a 40 and 80 grit for a fiber glass repair on my boat. Quickly realized how versatile they are. Used to sharpen mower blades, sand wood and fiberglass, and for rust removal. These are much faster and thorough than wire brushes for rust and paint removal..not to mention safer. Were also almost half the price of Lowes and Home Depot. I use air and a stainless brush to clean. Highly recommend.

## 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 Kuwait*
*Store origin: KW*
*Last updated: 2026-05-17*