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  5. 4-1/2" x 7/8" T27 Zirconia High Density Flap Disc - 10 pack
4-1/2" x 7/8" T27 Zirconia High Density Flap Disc - 10 pack
4-1/2" x 7/8" T27 Zirconia High Density Flap Disc - 10 pack
4-1/2" x 7/8" T27 Zirconia High Density Flap Disc - 10 pack
4-1/2" x 7/8" T27 Zirconia High Density Flap Disc - 10 pack
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US
You’re sending this have a long life and they last a long time!
2025-07-18
US
My 3rd order from Benchmark, will always come back for my abrasives. Fast shipping, and an excellent product. I mainly use flapdisks and there is an obvious difference in quality over what’s available in a box store.
2025-05-20
US
If you need a solid flap disc, that will get the job done without issue, look no further.
2025-03-29
US
Others claim to be the best for double the money but these are great and half the price I'll always purchase these flap disks
2025-03-09
US
We've used Benchmark for years, thousands of disc's!!! The high density provide the least tool changes and longest life. We'll Be Back, for more
2024-11-04
US
Last longer than you would expect,great for grinding off old nuts and bolts from farm implements
2024-09-20
US
Love these, they hold up to some serious abuse and this company is the one for you!
2024-07-12
US
Fabulous product and was everything I was told it would be and more!
2024-05-11
US
I normally go through several flap disks on large jobs but these have held up great, very pleased and will order more. Great price too!!
2024-05-09
US
Knocks down and polishes welds easily, and lasts a reasonable amount of time while doing so.
2024-04-17
US
High quality, sent to your doorstep! Benchmark has everything you need.
2024-03-30
US
I have not had time to use your products yet . But this is the third time you asked my to review your products so I we’ll say as far as ordering and shipping and getting them in timely manner it so far has been great dealing with you . Let’s see how they hold up in the shop when I get to use them .
2024-03-26
US
Best flap disc on the market period, rapid material removal great for blending and last 3-4x longer than others
2024-03-08
US
I'm a metal artist, and these flap disks can't be beat. I've used several different brands and nothing beats Benchmark.
2024-02-10
US
BA discs are every bit as good as the high dollar discs! Save your money and time, go with the BA!
2024-01-28
US
These are great. The high density are the way to go. They last much longer. always great products from benchmark!
2024-01-13
US
These are awesome! I use them on stone,wood and metal. Recently straightened 25 ft of a poorly laid metal roofs edge. Could not believe it when one disc removed over a half inch of 18 gauge steel panels for 25 ft 💪.
2023-12-29
US
So far I have only used one because it's lasted forever
2023-10-16
US
Some of the best flap wheels, especially for the money. No point in buying anywhere else.
2023-10-02
US
Takes off alot of surface rust. So then I could tack my truss on.
2023-09-03
About this product
Details
AerosolsNo
Flammable LiquidNo
Dangerous Goods Or Hazardous MaterialsNo
Contains Batteries Or Cells?None
Product description
4-1/2" X 7/8" T27 ZIRCONIA HIGH DENSITY FLAP DISC - 10 PACK
4-1/2" x 7/8" T27 (Flat Face) Zirconia High Density Flap Discs are manufactured using European zirconia cloth. The European material is superior due to its uniform particle size and premium blend of ingredients. These discs exceed our other flap discs by packing 40% more abrasives on each snippet than our regular density discs. In addition, all discs are manufactured on computer-controlled machines and subject to numerous tests which ensure high quality and greater safety.
These type 27 flap discs are a versatile product that can be used from aggressive stock removal to surface blending. The layered construction of abrasive flaps on this flap disc will continually expose new grains for longer life and finer finish compared to resin fiber discs. It can be used for heavy material removal on all types of metals.
T27 (flat face) discs are perfect for grinding down items that are not flat surfaces (like fence posts, gates, and risers etc).  For the best solution on flat surfaced check out our T29 (angled face) flap discs.
Zirconia grains have a self-sharpening property and stand up to higher heat and pressure than Aluminum Oxide (A/O), thus making Zirconia the go-to option, providing excellent stock removal that gives you more bang for your buck.
Quantity: 10 pieces
Dimensions
·Outer Diameter – 4-1/2” 
·Inner Diameter – 7/8”
·Shape – T27 Flat Face
·Thickness – 1/2" High Density (Jumbo) 
·Grain – Zirconia (Zirc)
·Available Grits – 40, 60, 80, 120
·Backing – X-weight polycotton cloth
·Max RPM – 13,300 
Machines Used On:
·Angle Grinders sized 4-1/2” to 5“.
Application:
·Ferrous Materials – Cast Iron, Steel, Stainless, Steel, Titanium, Nickel, Wrought Iron
·Non-Ferrous Materials - Copper
·Other Materials – Fiberglass, Plastic, Hard Rubber, Wood, Stone
·Dry use ONLY
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