--- product_id: 81905325 title: "DEWALT Flap Disc, Zirconia, 4-1/2-Inch x 7/8-Inch, 80-Grit (DW8309)" brand: "dewalt" price: "€ 24.40" currency: EUR in_stock: true reviews_count: 5 url: https://www.desertcart.hr/products/81905325-dewalt-flap-disc-zirconia-4-1-2-inch-x-7 store_origin: HR region: Croatia --- # 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:** € 24.40 **Availability:** ✅ In Stock ## Summary > ⚡ Grind faster, last longer, and finish sharper with DEWALT’s Zirconia flap disc! ## 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?** € 24.40 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/81905325-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 - • **Precision Grind:** Type 29 fiberglass backing ensures optimal 20-25° grinding angle for flawless results every time. - • **Endurance Champion:** Premium abrasive cloth lasts 15X longer than standard discs—less downtime, more productivity. - • **Trusted by Experts:** 4.8-star rating from 668 users proves this flap disc is the go-to for serious metalworkers. - • **Pro-Grade Compatibility:** Seamlessly pairs with DEWALT angle grinders like the DCG416B for professional-grade performance. - • **Turbocharged Efficiency:** Zirconia grit delivers 3X faster metal removal—get the job done in record time. ## Overview The DEWALT DW8309 4-1/2-Inch x 7/8-Inch 80-Grit Zirconia Flap Disc is engineered for high-efficiency metal grinding. Featuring zirconia grit for 3X faster material removal and a premium abrasive cloth that lasts 15X longer, it’s built on a Type 29 fiberglass backing that maintains a precise 20-25° grinding angle. Compatible with DEWALT angle grinders, this disc combines durability and precision, earning a 4.8-star rating from hundreds of professionals. ## Description DEWALT DW8309 4-1/2 x 7/8 80 Grit Zirconia Angle Grinder Flap Disc ## 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 | 145,950 in Business, Industry & Science (See Top 100 in Business, Industry & Science) 242 in Flap Discs | | Brand | DEWALT | | Compatible Devices | Angle Grinder | | Compatible Disc Grinder Tool Models | DEWALT DCG416B | | Compatible Material | Metal | | Construction Type | grinding | | Customer Reviews | 4.8 4.8 out of 5 stars (668) 4.8 out of 5 stars | | 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 Diameter | 4.5 Inches | | Item Dimensions | 11.4 x 11.4 x 2.3 centimetres | | Item Dimensions L X W | 11.4L x 11.4W centimetres | | Item Thickness | 4.5 Inches | | Item Type Name | DEWALT DW8309 4-1/2 x 7/8 80 Grit Zirconia Angle Grinder Flap Disc | | Item Weight | 45 g | | Manufacturer | Dewalt | | Manufacturer Part Number | DW8309 | | Material | Blend | | Max Rotational Speed | 13300 RPM | | Model Number | DW8309 | | Number Of Items | 1 | | Recommended Uses For Product | Grinding | | Unit Count | 1.0 count | | Upc | 028877310459 | ## Product Details - **Grit material:** Zirconia - **Product dimensions:** 11.4L x 11.4W centimetres - **Brand:** DEWALT - **Compatible devices:** Angle Grinder - **Grit type:** Medium ## 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/71ESIcGkhCL.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/812cjSwUWFL.jpg) ## Available Options This product comes in different **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 ### ⭐⭐⭐⭐⭐ Tough grinner disc *by on Reviewed in the United States 1 October 2025* Excellent quality and durabilityThe price was a bargain for what you can get out of this grinner blade/disc ### ⭐⭐⭐⭐⭐ Buena marca, buen producto *by on Reviewed in Mexico 20 December 2025* Cumple perfecto ### ⭐⭐⭐⭐⭐ Five Stars *by on Reviewed in Canada 3 May 2016* Prix avantageux sur Amazon et fonctionne très bien! Beaucoup plus durable que les marques générique tel que Mastercraft. ## 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) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/81905325-dewalt-flap-disc-zirconia-4-1-2-inch-x-7](https://www.desertcart.hr/products/81905325-dewalt-flap-disc-zirconia-4-1-2-inch-x-7) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-09-24*