---
product_id: 436452545
title: "Benchmark Abrasives 4.5\" x 7/8\" Premium High-Density Jumbo Zirconia Type 27 Flap Discs for Sanding, Stock and Rust Removal, Finishing, Grinding, Deburring (10 Pack) - 40 Grit"
brand: "benchmark abrasives"
price: "KD 40.25"
currency: KWD
in_stock: false
reviews_count: 5
category: "Benchmark Abrasives"
url: https://www.desertcart.com.kw/products/436452545-benchmark-abrasives-4-5-x-7-8-premium-high-density
store_origin: KW
region: Kuwait
---

# 40 grit for aggressive stock removal 4.5" diameter fits standard angle grinders High-density zirconia alumina for durability Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 27 Flap Discs for Sanding, Stock and Rust Removal, Finishing, Grinding, Deburring (10 Pack) - 40 Grit

**Brand:** benchmark abrasives
**Price:** KD 40.25
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Grind smarter, not harder — the pro’s choice for flawless finishes!

## Quick Answers

- **What is this?** Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 27 Flap Discs for Sanding, Stock and Rust Removal, Finishing, Grinding, Deburring (10 Pack) - 40 Grit by benchmark abrasives
- **How much does it cost?** KD 40.25 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/436452545-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

- • **Precision Aggression:** 40 grit zirconia alumina delivers powerful stock removal without sacrificing finish quality
- • **Unmatched Durability:** Lasts twice as long as aluminum oxide discs, saving you time and money
- • **Bulk Pack Convenience:** 10-pack ensures you never run out during critical projects—stay ahead of the grind
- • **Premium European Materials:** Crafted with uniform particle size zirconia cloth for consistent, professional results
- • **Versatile Industrial Strength:** Perfect for welding slag removal, deburring, beveling, and surface conditioning across industries

## Overview

Benchmark Abrasives 4.5" x 7/8" Type 27 flap discs feature high-density zirconia alumina for superior durability and aggressive 40 grit stock removal. Engineered with premium European materials, these discs excel in welding slag removal, deburring, and finishing across multiple heavy-duty industries. Sold in a convenient 10-pack, they fit standard 4.5" angle grinders and outperform traditional resin fiber and aluminum oxide discs, delivering longer life and smoother finishes.

## 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 140 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. 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.

Review: tienen mucha lija lo que los hace un poco esponjosos cuando están nuevos, me gusta porque la presión se aplica uniforme en lo que estoy desbastando y dejan un acabado muy liso mientras tengan suficientes capas de lija, cuando se están acabando ya dejan los cortes más notorios en el metal. Yo compro los de grano 40
Review: 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.

## Features

- Benchmark Abrasives 4.5" x 7/8" T27 flap discs are ideal for surface blending, beveling, grinding, deburring, edge chamfering, finishing, stock removal, etc.
- Zirconia flap discs are manufactured using European zirconia cloth. The European material is superior due to its uniform particle size and premium blend of ingredients.
- Designed to meet industrial standards, our high-quality flap discs are recommended to be used with angle grinders sized 4.5”. These Type 27 flap discs are versatile products used for aggressive stock removal and surface blending.
- Efficient flap discs are used in various industries like automotive, transportation, mining, shipbuilding, construction, welding, foundries, fabrication, etc.
- All our abrasive products are made with quality materials and exceed ANSI and EU European Standards. We trust in delivering high-quality products to the end-user. Customer satisfaction is the lifeline of our brand.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01MU0BBPF |
| Batteries Required? | No |
| Batteries included? | No |
| Colour | Blue |
| Customer Reviews | 4.7 4.7 out of 5 stars (538) |
| Cutting Diameter | 4.5 Inches |
| Date First Available | 13 Dec. 2016 |
| Grit Description | 40 Grit |
| Grit Number | 40 |
| Item Package Quantity | 10 |
| Item Weight | 1.05 kg |
| Item diameter | 4.5 Inches |
| Item model number | BM-F4.5SZ40T27HD |
| Item thickness | 0.88 Inches |
| Manufacturer | Benchmark Abrasives |
| Material | Zirconia Alumina |
| Part number | BM-F4.5SZ40T27HD |
| Pattern | 40 Grit |
| Style | 40 Grit | 10 Count |

## Product Details

- **Brand:** Benchmark Abrasives
- **Compatible devices:** Angle Grinder
- **Grit material:** Zirconia
- **Grit type:** 40 Grit
- **Product dimensions:** 11.4L x 11.4W centimetres

## Images

![Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 27 Flap Discs for Sanding, Stock and Rust Removal, Finishing, Grinding, Deburring (10 Pack) - 40 Grit - Image 1](https://m.media-amazon.com/images/I/41Hkfqz-DaL.jpg)
![Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 27 Flap Discs for Sanding, Stock and Rust Removal, Finishing, Grinding, Deburring (10 Pack) - 40 Grit - Image 2](https://m.media-amazon.com/images/I/41Msef2Os+L.jpg)
![Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 27 Flap Discs for Sanding, Stock and Rust Removal, Finishing, Grinding, Deburring (10 Pack) - 40 Grit - Image 3](https://m.media-amazon.com/images/I/41xvYqSGlVL.jpg)
![Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 27 Flap Discs for Sanding, Stock and Rust Removal, Finishing, Grinding, Deburring (10 Pack) - 40 Grit - Image 4](https://m.media-amazon.com/images/I/41ycoJEVg3L.jpg)
![Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 27 Flap Discs for Sanding, Stock and Rust Removal, Finishing, Grinding, Deburring (10 Pack) - 40 Grit - Image 5](https://m.media-amazon.com/images/I/51vWPihBslL.jpg)

## 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

### ⭐⭐⭐⭐⭐ Review
*by I***Z on 20 February 2023*

tienen mucha lija lo que los hace un poco esponjosos cuando están nuevos, me gusta porque la presión se aplica uniforme en lo que estoy desbastando y dejan un acabado muy liso mientras tengan suficientes capas de lija, cuando se están acabando ya dejan los cortes más notorios en el metal. Yo compro los de grano 40

### ⭐⭐⭐⭐⭐ Review
*by R***Y on 10 January 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.

### ⭐⭐⭐⭐⭐ Review
*by F***E on 7 July 2021*

Rester surpris, satisfait Je vais en recommandé d’auy

## 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 Kuwait*
*Store origin: KW*
*Last updated: 2026-02-23*