What is the thickness of these discs?

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"

which ones do you use for sharpening lawn mower blades?

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.

Does this have the quick change nut on it?

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

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Description

🔨 Grind Like a Pro with Every Spin!

VERSATILE PERFORMANCE - Tackle any project with ease, from grinding to finishing.
UNIVERSAL COMPATIBILITY - Fits a wide range of angle grinders for ultimate convenience.
INDUSTRIAL GRADE QUALITY - Designed to meet rigorous standards for professional results.
UNCOMPROMISING STANDARDS - Manufactured to exceed ANSI and EU standards for quality assurance.
PREMIUM ZIRCONIA MATERIAL - Experience superior durability and cutting efficiency.

Benchmark Abrasives offers a 10-pack of 4.5" x 7/8" premium high-density jumbo zirconia flap discs, designed for angle grinders. With a grit rating of 40, these discs are perfect for various applications including grinding, deburring, and finishing. Crafted from high-quality European zirconia cloth, they ensure consistent performance and durability, making them ideal for both professionals and DIY enthusiasts.

Reviews

A**L

Good value

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.

13.08.2025

S**N

Great value for flap-discs!

I've been using these for years for various steel projects. They're quality flap discs that last quite a while. Given their price, they are substantially better than the name-brand discs you can buy at the big box stores. This is my product of choice.

30.05.2024

B**R

Perfect

Very nice works great

16.08.2025

B**D

Great value

These are better than any brand I’ve bought at a store. I’ve probably used every brand available locally to me. Not leaps and bounds better than the best I’ve used but the price makes these supreme.

16.02.2025

D**Y

Works like it's supposed to

Not bad for the price

9.07.2025

G**N

T27 FLAT FLAP WHEEL

THIS IS EXACTLY WHAT I WAS EXPECTING. T27 IS A FLAT FLAP WHEEL PERFECT FOR WHAT I NEEDED.

2.09.2025

F**N

fast and correct

was as described

4.08.2025

D**S

Great discs and price

I’ve been in fabrication for a long time and finding the best consumables for the cheapest price is a constant dance. These are great flap discs and they last a long time compared to others at this price point. I definitely recommend them

11.03.2024

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