--- product_id: 346396653 title: "Benchmark Abrasives 4.5\" x 7/8\" Premium High Density Jumbo Zirconia Type 29 Flap Disc 40 Grit - 10 Pack" brand: "benchmark abrasives" price: "516.62 DT" currency: TND in_stock: true category: "Benchmark Abrasives" url: https://www.desertcart.tn/products/346396653-benchmark-abrasives-4-5-x-7-8-premium-high-density store_origin: TN region: Tunisia --- # 40 grit premium zirconia for aggressive stock removal 4.5" diameter for versatile grinding Type 29 angled face for 90% abrasive contact Benchmark Abrasives 4.5" x 7/8" Premium High Density Jumbo Zirconia Type 29 Flap Disc 40 Grit - 10 Pack **Brand:** benchmark abrasives **Price:** 516.62 DT **Availability:** ✅ In Stock ## Summary > ⚡ Grind smarter, not harder — unleash pro-level precision every time! ## Quick Answers - **What is this?** Benchmark Abrasives 4.5" x 7/8" Premium High Density Jumbo Zirconia Type 29 Flap Disc 40 Grit - 10 Pack by benchmark abrasives - **How much does it cost?** 516.62 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/346396653-benchmark-abrasives-4-5-x-7-8-premium-high-density) ## 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 - • **ANSI Safety Certified:** Manufactured to meet strict ANSI safety standards for peace of mind on every job. - • **Built for the Metal Pro:** Premium zirconia alumina grains deliver superior durability and performance on stainless steel and non-ferrous metals. - • **Vibration-Reducing Backing:** High-quality backing plate absorbs vibration, ensuring smoother operation and less fatigue. - • **Maximize Your Grind Efficiency:** High-density jumbo flap disc offers 30-60% more grinding surface for faster material removal. - • **Trusted by Welders & Fabricators:** The #1 choice for weld blending, slag removal, deburring, and surface conditioning. ## Overview Benchmark Abrasives 4.5" x 7/8" Premium High Density Jumbo Zirconia Type 29 Flap Disc (40 Grit) is engineered for heavy stock removal and weld blending. Featuring a Type 29 angled face for maximum abrasive contact and premium zirconia alumina grains, this 10-pack delivers long-lasting durability and superior grinding performance on stainless steel and metal surfaces. Designed with a vibration-absorbing backing and ANSI safety compliance, it’s the go-to choice for professional welders and metal fabricators using angle grinders. ## Description Flap discs are used in heavy stock removal, often weld removal. They outperform Resin Fiber Discs due to their increased lifetime and last twice as long as Aluminum Oxide discs. To achieve a finish equivalent to a Resin Fiber Disc, always use a flap disc one grit coarser. e.g. If the operator is running a 60 grit Resin Fiber Disc, try a 40 grit flap disc. This 40 grit flap disc is made with Zirconia Alumina grain, which is ideal for stainless steel and metal applications while still working well with non-ferrous applications. The Type 29 angled face allows for 90% of the abrasive material to be in contact with work surface, yielding maximal grinding surface area for greater ease, effectiveness and speed. We use a high quality backing plate to help absorb vibration. Specific suited applications include: weld blending, removing weld slag, deburring, edge blending, surface conditioning and general metal fabrication. 'Jumbo' or 'High Density' flap discs usually contain 30-60% more surface area for grinding. ## Features - Benchmark Abrasives uses only the highest quality grains and backing material for our flap discs. - Designed for grinding, blending, sanding and finishing on a wide range of material. - The #1 choice for welders and metal fabricators. - Made in accordance with ANSI safety requirements. - For use on an Angle Grinder ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01D0HA3LK | | ASIN | B01D0HA3LK | | Brand Name | Benchmark Abrasives | | Compatible Devices | Angle Grinder | | Construction Type | Coated | | Customer Reviews | 4.7 4.7 out of 5 stars (2,081) | | Customer reviews | 4.7 4.7 out of 5 stars (2,081) | | Date First Available | 6 April 2016 | | Grit Material Type | Zirconia | | Grit Number | 40 | | Grit Type | Coarse | | Industry Standard Identifier | Type 29 | | Is Discontinued By Manufacturer | No | | Item Dimensions | 11.4 x 11.4 x 1.3 centimeters | | Item Dimensions L x W | 11.4L x 2.2W centimeters | | Item Thickness | 0.88 Inches | | Item Weight | 113 g | | Manufacturer | Benchmark Abrasives | | Manufacturer | Benchmark Abrasives | | Manufacturer reference | BM-F4.5SZ40T29HD | | Material Type | Premium Zirconia Grains | | Part Number | BM-F4.5SZ40T29HD | | Product Dimensions | 11.43 x 11.43 x 1.27 cm; 113.4 g | | UPC | 072802810699 728028210699 | | Unit Count | 10.00 Piece | ## Product Details - **Brand:** Benchmark Abrasives - **Compatible devices:** Angle Grinder - **Grit material:** Zirconia - **Grit type:** Coarse - **Product dimensions:** 11.4L x 2.2W centimeters ## Images ![Benchmark Abrasives 4.5" x 7/8" Premium High Density Jumbo Zirconia Type 29 Flap Disc 40 Grit - 10 Pack - Image 1](https://m.media-amazon.com/images/I/71LKMXpx7gL.jpg) ![Benchmark Abrasives 4.5" x 7/8" Premium High Density Jumbo Zirconia Type 29 Flap Disc 40 Grit - 10 Pack - Image 2](https://m.media-amazon.com/images/I/81xUY4X0PhL.jpg) ![Benchmark Abrasives 4.5" x 7/8" Premium High Density Jumbo Zirconia Type 29 Flap Disc 40 Grit - 10 Pack - Image 3](https://m.media-amazon.com/images/I/61XyKVyc1TL.jpg) ![Benchmark Abrasives 4.5" x 7/8" Premium High Density Jumbo Zirconia Type 29 Flap Disc 40 Grit - 10 Pack - Image 4](https://m.media-amazon.com/images/I/717X5lmuZeL.jpg) ![Benchmark Abrasives 4.5" x 7/8" Premium High Density Jumbo Zirconia Type 29 Flap Disc 40 Grit - 10 Pack - Image 5](https://m.media-amazon.com/images/I/61aWSLjg2YL.jpg) ## Questions & Answers **Q: would these work to remove paint off a concrete floor?** A: Yes, but if you have a large area to do the discs will get gunked up with paint. Might want to use paint remover and a metal scraper. **Q: Are these good for wood?** A: They are actually VERY good on wood. Much faster than most sanders. You have to have a steady hand though. **Q: can this be used for sanding a jon boat?** A: I wouldn't recommend this for sanding a Jon boat as too much pressure with a grinder could penetrate the skin of the boat. **Q: what grit on these discs would be best to remove light rust and smooth paint on body of a 10 wheel dump truck** A: I would think 80 grit would do best for the light work you’re describing. ## Frequently Bought Together - Benchmark Abrasives 4.5" x 7/8" Premium High Density Jumbo Zirconia Type 29 Flap Discs 4 1/2 for Angle Grinder, Sanding Discs, Finishing - Grinding Wheels 4 1/2 Inch (10 Pack) - 40 Grit - 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 - 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 --- ## 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.tn/products/346396653-benchmark-abrasives-4-5-x-7-8-premium-high-density](https://www.desertcart.tn/products/346396653-benchmark-abrasives-4-5-x-7-8-premium-high-density) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-09*