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  5. 4-1/2" x 7/8" T27 Zirconia High Density Flap Disc - Mixed Grit 10 Pack
4-1/2" x 7/8" T27 Zirconia High Density Flap Disc - Mixed Grit 10 Pack
4-1/2" x 7/8" T27 Zirconia High Density Flap Disc - Mixed Grit 10 Pack
4-1/2" x 7/8" T27 Zirconia High Density Flap Disc - Mixed Grit 10 Pack
4-1/2" x 7/8" T27 Zirconia High Density Flap Disc - Mixed Grit 10 Pack
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US
You have some of the best flap disk grinder wheels I have ever used. I have used some high dollar wheels that can’t hold up 1/4th as good as the ones I buy from you.
2025-03-19
US
I own a small fab shop. We love the products benchmark abrasives sell. They are stronger and last so much longer than any other brand we have used. I recommend them to everyone I can.
2024-03-03
US
Have been using your flap discs almost exclusively. Best ones I have tried
2023-12-23
US
I'm a repeat customer with these. I started with a Mix pack and have been coming back ever since.
2023-11-08
US
All the other cheap one i bought just wasted away in about five minutes these hold up great its made me a believer in the quality and I'm picky about it if u crunch the numbers u wont save any more money with any other brand
2023-08-31
US
Works like supposed to work but even better I'm very thankful for this
2023-07-07
US
These clean up weld joints very well and fast. They also last a long time. I’ve used others before and these last at least twice as long if not longer. I’ll be buying more when I run low.
2023-06-10
US
Benchmark flap discs last longer and work better for half the cost of store bought discs. Ive started using these and never turned back.
2023-05-17
US
I’m always surprised how good these things are, they last decent amount of time and pretty good price. I’ve been enjoying using these without breaking the bank on the expensive ones!
2022-10-13
US
The best abrasives out there! High quality and long lasting!
2022-10-09
US
Very well constructed with great quality. Will buy again!
2022-02-19
US
Great product. I’ve been using Benchmark grinding discs for a while now . My go too product. Great customer service 👍
2022-01-30
US
I love these Discs. Work Very Well, and last much longer
2021-12-24
US
these are truly a great product, far better than anything I can by at the local big box store. Very great working and long lasting at the price of HF.....why not wait on shipping for something that works this good.
2021-12-14
US
What other company is willing to give you 10 discs just to try for free! They hold up better than the “other ones” and place an order and 2-3 days later it’s here. Benchmark has earned my business for life! Y’all rock
2021-07-19
US
From 2017 to 2021 I went through exactly 10 flap discs, using them mainly while building a drag racing truck, multiple hobby jobs and during my day job as a diesel mechanic. 10! Prior to finding these guys I was using a more popular, name brand’s sanding discs, which would only last a week or two TOPS! These last months! I’ll never buy another brand.
2021-05-31
US
Always the best when it comes to flap disks! Powerful and long lasting! 10/10 will continue to recommend benchmark abrasives!
2021-05-24
US
These wheels are amazing I will no longer be buying from anywhere else the price is amazing and the wheels are just way better then the big box store brands.
2021-04-30
US
I've been buying these for 3 now. And I saw an add for another brand, and it came with almost twice the total discs. Unfortunitley i bet. Not only were they half as thick, they didnt even last a 1/3-1/4 of the time benchmarks do. I will not use any other companies products ever again. And Jake, in customer service is the best and easiest person ive every dealt with. This company and its employees make a superior product, AND I AINT GETTIN PAID TO SAY SQUAT! Burnin' Metal Art Worx
2020-11-06
US
I have used many different grinder and flapper wheels but have to say these hold up and do a great job at a great price ....
2020-07-10
About this product
Details
Dangerous Goods Or Hazardous MaterialsNo
Product description
 
·Product Specification
·Shipping
·Refund
Product Specification
4-1/2" X 7/8" T27 ZIRCONIA HIGH DENSITY FLAP DISC - MIXED GRIT 10 PACK
This pack contains the following mix:
40 Grit - 3 pieces
60 Grit - 3 pieces
80 Grit - 3 pieces
120 Grit - 1 piece
Our mixed pack is a great opportunity for you to test our range of grits at an affordable price!
4-1/2" x 7/8" T27 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 (3 pieces), 60 (3 pieces), 80 (3 pieces), 120 (1 piece) 
·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
Safety Tips & Techniques:
·For less stock removal try using a lighter touch or a feathered approach to your grinding.  Flap discs are like grinding wheels with power steering!
·Always wear proper PPE to include (but not limited to) safety glasses, hearing protection, respirator, and hand protection.  Keep all guards in place on your machine.
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I was purposely trying to kill this flap disc in one video but clearly it’s just made that well 💪🏼  #tradesman #weldernation #fabrication #flapdisc
Bruno
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