Serious Grit - 3" x 5" (80mm x 133mm) 14-Hole Sanding Sheet Assortment - 80, 120, 150, 180, 220 Grit (10 of Each) - Fits Festool RTS 400 & Mirka Deos 353 - Hook & Loop Sandpaper - 50 Pack Box
Condition: New
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Availability:
In Stock.
Arrives
Monday, Mar 23
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Style: Mixed Grit
Features
- FITS FESTOOL RTS 400 & MIRKA DEOS Serious Grit 5.25"" (80mm x 133mm) 14-Hole assorted grit hook & loop rectangle sanding sheets are compatible with the Festool RTS 400 and Mirka DEOS 353 electric detail sanders. These sanding sheets are ideal for sanding all surfaces, including wood, metal, drywall, epoxy, and painted surfaces.
- HOOK & LOOP-BACKED FILM SHEETS Our sanding sheets are constructed with a heavy-duty polyester film backing material between the aluminum oxide abrasive grain and the hook and loop backing. This premium material creates a stronger disc, with more effective heat dissipation, and a better finish. These wet/dry discs are perfect for woodworking, auto body work including paint removal and wet sanding, and more.
- MORE DURABLE Our sandpaper sheets are made with polyester film construction which makes them nearly impossible to tear. No more frayed or torn edges when sanding around corners.
- LESS CLOGGING Our proprietary heat-treated zinc stearate anti-clog coating sheds dust before it has a chance to clog up your disc, making these assorted grit sandpaper sheets virtually dust free when paired with a dust extractor or vacuum system.
- SMOOTHER FINISH The film construction creates a flatter, stronger disc that produces a better finish vs paper, mesh, or net sanding discs. With our anti-clog coating, the entire surface area of the disc stays effective longer, which improves cutting power and leads to a more consistent swirl-free finish.
Size: Mixed Grit
Color: Brown
Backing Type: Film
Product Dimensions: 5.25"L x 3.15"W
Brand: Serious Grit
Size: Mixed Grit
Color: Brown
Backing Type: Film
Product Dimensions: 5.25"L x 3.15"W
Brand: Serious Grit
Grit Type: Dry
Grit Material: Aluminum Oxide
Material: Aluminum Oxide, Zirconia Alumina
Unit Count: 50.0 Count
UPC: 850053215414
Manufacturer: Serious Grit
Compatible Devices: Festool RTS 400, Mirka DEOS 353
Item Weight: 10.8 ounces
Item model number: SG-133R-MG
Date First Available: June 23, 2023
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Mar 23
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: 180 Grit
These Serious Grit sanding sheets work perfectly with my Festool RTS 400. The hook and loop backing holds strong, and the sheets don’t curl or tear during use. The 120 grit cuts well and lasts longer than expected, even on tougher jobs. Great quality for the price—would definitely buy again.
Reviewed in the United States on January 4, 2026 by Jen
Style: 400 Grit
I was not expecting to be happy with this product, I was unable to get what I normally use quickly enough to keep work moving, so I thought worse case it should at least get me by until I could get something else. It is a South Korea product which was not a negative when I saw the package, I have been using an abrasive from there on a wide belt machine for years and have had great results. I was using fine grits for sealer sanding and I thought durability was excellent, it cuts fast and evenly, the hook and loop is good, stayed in place and still had strong hold after abrasive was worn. I will not hesitate to purchase more in the future, using on a Mirka Deos and holes line up perfectly. I was thinking about the review while using to try to give a simple overall impression, boiled down I think it’s a very good to premium abrasive at a great price,
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Reviewed in the United States on March 4, 2025 by Matt
Style: 180 Grit
Great value for the money, quality abrasives !
Reviewed in the United States on December 14, 2025 by Albert Frangipane
Style: 220 Grit
good value Holes fit my sander
Reviewed in the United States on January 12, 2026 by S. Tifental
Style: Mixed Grit
Good stuff and glad to see someone making an alternative for this particular sander. I think it’s a good value as what I’ve used so far albas pretty good life to it. Definitely will buy again and will be trying the sanding sponges made for this sander as well. Only reason it’s not a 5 is because cubitron exists. Just not in this particular size
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Reviewed in the United States on January 5, 2026 by Nicholas H.
Style: Mixed Grit
These work just as good if not better then original festtool sandpaper. HIGHLY RECOMMEND.
Reviewed in the United States on November 28, 2025 by DE Finishes
Style: 320 Grit
These sheets seem to hold up just as well as the Festool sheets but cost about half as much. The holes match perfectly with the Festool block sander and the RTS 400. The grip on the sheets isn’t quite as strong as the Festool sheets, but I don’t think I’ve noticed any significant difference in the surface of the work I’m sanding. Just something to maybe keep in mind for more aggressive sanding.
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Reviewed in the United States on October 18, 2025 by Greg
Style: Mixed Grit
Quality product, the value for money. I use Serious Grit for all my pre finish work and onsite painting. I will use it over Festool Garnat anytime.
Reviewed in the United States on October 25, 2025 by Lyle Tibbs