4-1/2" x 7/8" A/O Resin Fiber Sanding Discs - 25 Pack


Pack Size:
25 Discs
Angle Grinder
Aluminum Oxide

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Product Description

4.5" Aluminum Oxide Resin fiber discs are the economical choice when looking to grind or finish as surface.

Select from 24, 36, 60, 80 and 120 Grit


Black Hawk Aluminum Oxide Resin Fiber Discs are a great economical choice when you need to grind, blend or achieve a smooth surface. These versatile discs are very popular for a wide range of project types due to their low cost per disc and overall versatility. Make sure you keep a pack of these grinding discs in the shop because you're sure to use them.

Black Hawk AO Resin Fiber Discs are manufactured using premium Aluminum Oxide within a coat of resin bonding agent, atop a heavy-duty vulcanized fiber backing. By utilizing top performing abrasive grains Black Hawk Resin Fiber Discs are able to provide superior grinding performance and extended useful life. These resin fiber disc are design for use on ferrous and non-ferrous metals, as well as wood and fiberglass.

Product Features:

  • Long lasting
  • 24 to 36 grit - coarse - for extra heavy deburring or grinding
  • 60 to 120 grit - medium - for medium deburring and finishing
  • Heavy duty vuclanized fiber backing

Works well on the following Materials:

  • Wood
  • Ferrous Metal
  • Non-Ferrous Metal
  • Fiberglass

Use On:


  • 4.5” Diameter
  • 7/8” Arbor
  • Max RPM 4.5” = 13,200
  • Material = Premium Aluminum Oxide
  • Grit = 24, 36, 60, 80, 120 Grit available

Reviews Write a Review

  • 5
    grinding discs

    Posted by T May on Jun 1st 2020

    Very happy with these discs. Cut great. excellent quality

  • 3
    Fiber disk

    Posted by Corey on May 24th 2020

    They feel good and sturdy have not had a chance to use them yet
    fast shipping
    Down side is they are arched there is not any thing sturdy to hold them flat during the shipping like a set of plywood then shrink wrapped would help but other than that first time buyer and the price and speed of shipping will definitely be coming back for more

  • 5
    Sanding disc

    Posted by John Dupree on May 10th 2020

    Great all around!

  • 5
    Can't beat the price

    Posted by Mike Riley on Mar 8th 2020

    I got a box off Amazon then found them here at empire. So glad I did. My shop uses these daily for the price you can't beat them

  • 4
    Hard to find

    Posted by JustBob on Sep 24th 2019

    Lowes and Home Depot only supply these discs in grits 36 an 50. Good to know we can get what we need from Empire Abrasives.

  • 5
    Good product

    Posted by Jack on Sep 11th 2019

    I haven't used yet as the discs were just for stock, as I was getting low. Discs appear well made.

  • 5
    Excellent abrasives

    Posted by David on Aug 31st 2019

    They are a best buy if you're looking for disc's that do a excellent job and last a long time. Very fast shipping and excellent price.

  • 4
    You won't get burned

    Posted by Kevin on Jul 21st 2019

    Product performed well doing what it is supposed to do. Would be nice if assortment pack of various grit was available.

  • 5
    Great product

    Posted by Unknown on Jul 13th 2018

    Very good product fast shipping. Will do business again