4-1/2" Zirc Flap Disc T27 - 10 Pack


Pack Size:
10 Discs
Angle Grinder

Free Shipping on orders over $99 Congratulations! Your order qualifies for FREE SHIPPING (Restrictions may apply)

Frequently Bought Together

Please choose options for all selected products

  • Choose Options

Product Description

4-1/2" x 7/8" Black Hawk Zirconia Flap Discs Type 27 - 10 Pack

Available Grits: 40, 60, 80, 120


Are you looking for a way to speed up your jobs without sacraficing quality? Black Hawk Flap Discs both grind and finish in one step without breaking to change abrasives or tools.

Black Hawk Zirconia Flap Discs consist of sanding strips adhered to a strong fiberglass backing plate in an overlapping circular pattern. Each sanding strip is made using premium Zirconia grain and European cloth. These discs are built for precision, durability and ease of use. Flap Discs are an essential tool for right angle metal grinding applications, and can be used in place of both grinding wheels and resin fiber discs. Zirconia is a long-life premium abrasive that works well on stainless steel, hard steel, titanium and various others. A Zirconia Flap Disc continually produces new sharp points, creating faster cutting and a longer lifespan than aluminum oxide varieties.

Product Features:

  • Normally operated at a 0° to 15° angle
  • Grind more smoothly than angle discs
  • Less aggressive than angle discs
  • Best choice for flat surface work
  • For use with an Angle Grinder
  • Contaminant Free: Less than 0.1% Iron, Sulfur and Chlorine - will NOT cause after-rust


Works well on the following materials:

  • Stainless Steel
  • Hard Steel
  • Titanium
  • Various Others



  • Type 27 - Flat Flaps (The Type 27 Flap Disc is flat in shape which works well for finishing or blending applications.)
  • Diameter = 4.5”
  • Arbor = 7/8”
  • Max RPM = 13300
  • Material = Premium Zirconia Grain
  • Grit = 40, 60, 80 & 120 Grits available

Reviews Write a Review

  • 5
    4 1/2 disc

    Posted by Kerry on Sep 13th 2020

    Works great lasts longer then others

  • 5
    Black Hawk 4.5" flap discs

    Posted by RamFab on Jun 18th 2020

    Exactly what we expect from a flap disc in this price range. Performs just fine. Have bought these many times.

  • 5
    great wheels

    Posted by michael said on Dec 17th 2019

    last very well, great price

  • 5
    Good product

    Posted by Jim knox on Jun 15th 2019

    Very good product. Works great and lasts long.

  • 5
    Great grinder disc

    Posted by Eddy on Jun 13th 2019

    Awesome disc work out great last a long time

  • 5
    Very good product

    Posted by Hoss on Jun 11th 2019

    These are great sanding discs

  • 5
    Great Product

    Posted by Arron on Jun 7th 2019

    Great flap disc would buy again. Last a while would recommend for someone to buy.

  • 5
    Good product reasonable price

    Posted by Unknown on Jun 7th 2019

    Works well

  • 4
    A Pretty Good Disc

    Posted by Unknown on May 29th 2019

    For the price, these can’t be beat. They seem somewhat cheaper than the ones I’ve used in the past, but again, these are a price point disc. They seem to work well and I haven’t burned through one yet but haven’t been real rough on them. I would buy again