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expired Posted by DaddyScholz • Sep 27, 2021

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expired Posted by DaddyScholz • Sep 27, 2021

DEWALT Flap Disc, Zirconia, 4-1/2-Inch x 7/8-Inch, 80-Grit (DW8309) - $3.49

$3.49

$15

76% off

Amazon

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Amazon.com [amazon.com] has DEWALT Flap Disc, Zirconia, 4-1/2-Inch x 7/8-Inch, 80-Grit (DW8309) for $3.49, regular price is $14.58. Shipping is free with Prime or on orders $25+.

These things are great for sharpening lawn mower blades, taking paint or rust of metal objects, etc.

About this item:
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

https://www.amazon.com/gp/product...UTF8&psc=1

Deal Score

+12

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Price Intelligence

Model: 4-1/2" x 7/8" 80g type 29 HP flap disc

Deal History

Sale Price

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$NaN

Today

Post Date	Sold By	Sale Price	Activity
02/07/21	Amazon	$3.50 frontpage	28

Current Prices

Sort: Lowest to Highest | Last Updated 7/1/2025, 07:42 PM

Sold By	Sale Price
Lowe's	$10.48
Ace Hardware	$11.99
Amazon	$5.95

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9 Comments

xenidus

Sep 27, 2021

1,289 Posts

Joined Jan 2010

Sep 27, 2021

xenidus

Sep 27, 2021

1,289 Posts

Dewalt tools = A+

Dewalt Accessories (bits, sanding pads etc) = C- to D range

They notoriously score at the bottom of the barrel for "cost per performance" metrics on Project Farm Tests: https://www.youtube.com/channel/U...-wuOg_p0Ng

They got spanked pretty bad for this massive sandpaper show down as well: https://www.youtube.com/watch?v=NZDCRFi8dKY

Not the same product, but I bet it is the same manufacturing process.

Just my 2 cents...

DaddyScholz

Original Poster

Sep 27, 2021

349 Posts

Joined Nov 2012

Sep 27, 2021

DaddyScholz

Original Poster

Sep 27, 2021

349 Posts

Quote from xenidus

I have sharpened countless lawnmower blades and cleaned up all sorts of metals and I am still on my first disk.
I couldn't be happier, even if I had paid full price...

texasranger556

Sep 27, 2021

386 Posts

Joined Mar 2007

Sep 27, 2021

texasranger556

Sep 27, 2021

386 Posts

If you need enough to justify the shipping, LVA is the way to go https://www.lehighvalleyabrasives...fd4-5-40zf

Loudog504

Sep 27, 2021

3,867 Posts

Joined Jan 2011

Sep 27, 2021

Loudog504

Sep 27, 2021

3,867 Posts

I've never had any issues with dewalt grinder disk. But not that i use them all day, just here and there.

NOW sand paper on the other hand... Stay away unless its dirt cheap.

rockstarjeremy

Sep 27, 2021

1,072 Posts

Joined Sep 2003

Sep 27, 2021

rockstarjeremy

Sep 27, 2021

1,072 Posts

Is this good on feet?

Jeppedy

Sep 27, 2021

243 Posts

Joined Dec 2004

Sep 27, 2021

Jeppedy

Sep 27, 2021

243 Posts

Dead. Deal no longer available

nugget-tn

Sep 27, 2021

138 Posts

Joined Dec 2016

Sep 27, 2021

nugget-tn

Sep 27, 2021

138 Posts

Quote from rockstarjeremy

is this good on feet?

😂 😆 😝

ScottLoo

Sep 27, 2021

10 Posts

Joined Sep 2017

Sep 27, 2021

ScottLoo

Sep 27, 2021

10 Posts

Quote from Jeppedy

Dead. Deal no longer available

Gone, fast

HPPTT

Sep 27, 2021

422 Posts

Joined May 2011

Sep 27, 2021

HPPTT

Sep 27, 2021

422 Posts

60 grit version available at $3.8

Unregistered (You)

Home & Home Improvement Tools Drills & Power Tools DeWalt Amazon

DEWALT Flap Disc, Zirconia, 4-1/2-Inch x 7/8-Inch, 80-Grit (DW8309) - $3.49

$3.49

$15

Community Voting