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  5. 4-1/2" x 7/8" T29 Zirconia High Density Flap Disc - 10 pack
4-1/2" x 7/8" T29 Zirconia High Density Flap Disc - 10 pack
4-1/2" x 7/8" T29 Zirconia High Density Flap Disc - 10 pack
4-1/2" x 7/8" T29 Zirconia High Density Flap Disc - 10 pack
4-1/2" x 7/8" T29 Zirconia High Density Flap Disc - 10 pack
4-1/2" x 7/8" T29 Zirconia High Density Flap Disc - 10 pack
4-1/2" x 7/8" T29 Zirconia High Density Flap Disc - 10 pack
4-1/2" x 7/8" T29 Zirconia High Density Flap Disc - 10 pack
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US
Disc quality is excellent. Very uniform flaps and perfectly cut round. I'm edge grinding 3/8" steel plate with an angle grinder and these zirconia last longer than I expected. My next order will be to try out the ceramic. The pricing was also very good.
2025-10-26
US
I primarily use these to sharpen the blades on my zero turn mower. They seem to generate less heat on the blades compared to regular grinding wheels. They get plenty of use on welding projects around the garage too. Anita Bath did a great job packaging my order…. she deserves a huge pay increase!
2025-07-12
US
It’s my go-to for initial grind on all my art projects. The jumbo wheels have a soft “feel”. Great product.
2025-05-22
US
They last longer than the regular disk. They work good on inside corners!
2025-05-21
US
Very pleased with the quality. Also the delivery was fast. I will be ordering more soon.
2025-04-16
US
I have these on several grinders throughout my shop and you can’t beat the quality
2025-03-05
US
Fast shipping, great product, and it came with a sticker!
2025-02-04
US
Fast shipping, great price, awesome product. This will help me on my metal fabrication projects.
2025-01-16
US
Tried the free Facebook add because I didn’t want to fork over the money for name brand sanding discs. Well they last so long they are better value than anything else I’ve found, and don’t shred up like cheaper ones. At least 5-10x longer lasting and 2x better value. All I’ve ordered since that free order
2024-11-06
US
Benchmark comes through everytime. Great products at an excellent price.
2024-11-03
US
Can’t beat the prices. And the product is also better then Any thing you can buy at a big box store
2024-10-22
US
I’ve been using these for years! The quality and the price can not be beat!
2024-09-24
US
I love these disk. They not only do the job and last, but also give me the desired texture I need when working with steel.
2024-09-17
US
Haven’t used yet, but they look way better than I have gotten from other companies
2024-08-30
US
Competes with more expensive brands. I have been impressed with the quality.
2024-08-08
US
We love these (and all) Benchmark Flap discs that we've tried out. Solid product at an affordable price.
2024-07-22
US
These work awesome, they out last all of the other brands I have tried.
2024-07-11
US
I used these flap disks on all my welding projects. Usually I’ll go through 8-10 of them on a trailer build.
2024-06-10
US
These are as good or better than any other disk I've used, even the ones that cost 4x as much from my local welding supply. Even if Benchmark Abrasives only carried these flap disks and nothing else, this is enough to keep folks coming back.
2024-05-11
US
Every product I’ve used so far has been exceptional. Price is great. Fast shipping!!
2024-05-09
About this product
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Contains Batteries Or Cells?None
Dangerous Goods Or Hazardous MaterialsNo
Product description
·Product Specification
·Shipping
·Refund
Product Specification
4-1/2" X 7/8" T29 ZIRCONIA HIGH DENSITY FLAP DISC - 10 PACK
4-1/2" x 7/8" T29 (Angled 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 29 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.
T29 (angled face) discs are angled up at 15 degrees to provide optimal, ergonomic flap use when grinding down items that are flat surfaces (like bead weld).  For the best solution on non-flat surfaced check out our T27 (flat 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 – T29 Angled Face (15 degree)
·Thickness – 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
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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