---
product_id: 96731870
title: "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"
brand: "benchmark abrasives"
price: "€ 332.84"
currency: EUR
in_stock: true
reviews_count: 8
category: "Benchmark Abrasives"
url: https://www.desertcart.gr/products/96731870-benchmark-abrasives-4-5-x-7-8-premium-high-density
store_origin: GR
region: Greece
---

# Premium high-density zirconia for max durability Type 27 flap disc - industrial-grade versatility 4.5 inch diameter - perfect fit 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

**Brand:** benchmark abrasives
**Price:** € 332.84
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your grind game with pro-level durability and precision!

## Quick Answers

- **What is this?** 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 by benchmark abrasives
- **How much does it cost?** € 332.84 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/96731870-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

- • **Built to Last:** European zirconia cloth delivers extended lifespan and consistent abrasion performance.
- • **Multi-Task Master:** Ideal for grinding, beveling, rust removal, and surface blending across industries.
- • **Certified Excellence:** Exceeds ANSI & EU standards for professional-grade reliability and safety.
- • **Precision Meets Power:** 40 grit zirconia alumina ensures aggressive stock removal with smooth finishing.
- • **Universal Compatibility:** Fits all major 4.5" angle grinders including Dewalt, Makita, Bosch & more.

## Overview

Benchmark Abrasives 4.5" x 7/8" Type 27 flap discs feature premium high-density zirconia alumina grit for aggressive yet smooth grinding. Designed for universal 4.5" angle grinder compatibility, these industrial-grade discs excel in stock removal, finishing, and rust removal. Manufactured to exceed ANSI and EU standards, this 10-pack offers professionals and DIYers a durable, versatile solution trusted across automotive, construction, and fabrication sectors.

## Description

Buy 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: Flap Discs - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Best you can get and VERY affordable. - I have tried so many brands. From the super expensive to the HF cheapos. These hit far above their weight. Last a long t ime, work extremely well and are VERY affordable. They are the only brand I have used for several years now. And I do not plan on changing.
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.

## 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 that ensure customer satisfaction. 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 | #8,823 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8 in Flap Discs |
| Brand | Benchmark Abrasives |
| Brand Name | Benchmark Abrasives |
| Compatible Devices | Angle Grinder |
| Compatible Material | Stainless Steel |
| Construction Type | Grinding |
| Customer Reviews | 4.7 out of 5 stars 568 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 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 |
| Product Dimensions | 4.5"L x 4.5"W |
| UPC | 653341412928 |

## 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

![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 - Image 1](https://m.media-amazon.com/images/I/71bvP7yXN2L.jpg)
![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 - Image 2](https://m.media-amazon.com/images/I/81chN2zIbAL.jpg)
![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 - Image 3](https://m.media-amazon.com/images/I/61jSr8mxYcL.jpg)
![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 - Image 4](https://m.media-amazon.com/images/I/717D4rXeg+L.jpg)
![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 - 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

### ⭐⭐⭐⭐⭐ Best you can get and VERY affordable.
*by R***Y on January 10, 2026*

I have tried so many brands. From the super expensive to the HF cheapos. These hit far above their weight. Last a long t ime, work extremely well and are VERY affordable. They are the only brand I have used for several years now. And I do not plan on changing.

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Good value
*by A***L on August 13, 2025*

This is a good flap disk. It grounds fast and smooth. It does get thin a little too soon. But it does the job. I would recommend this product.

## 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 Greece*
*Store origin: GR*
*Last updated: 2026-03-11*