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⚡ Grind smarter, not harder — the pro’s choice for flawless finishes!
The SIGNI 5 Pack SiC Plastic Back Grinding Wheels (4.5 inch, 24 grit) are engineered for professional-grade grinding on granite, marble, concrete, and glass. Featuring a durable plastic backing that removes the need for a backup pad, these silicon carbide discs deliver up to 10 times longer life and faster cutting speeds. Designed for both dry and wet grinding, they minimize material loading for efficient, clean results—ideal for managers and pros who demand reliability and performance on every job.
| ASIN | B09KY8SV5J |
| Best Sellers Rank | #57,922 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #102 in Grinding Discs |
| Brand | SIGNI |
| Brand Name | SIGNI |
| Compatible Devices | Angle Grinder |
| Compatible Material | Granite, Marble, Concrete, Glass |
| Construction Type | Grinding |
| Customer Reviews | 4.4 out of 5 stars 27 Reviews |
| Grit Material | Silicon Carbide |
| Grit Material Type | Silicon Carbide |
| Grit Number | 24 |
| Grit Type | Coarse |
| Housing Material | Plastic |
| Included Components | SiC |
| Industry Standard Identifier | Backing Pad |
| Item Diameter | 4.5 inches |
| Item Dimensions | 4.5 x 4.5 x 0.1 inches |
| Item Dimensions L x W | 4.5"L x 4.5"W |
| Item Thickness | 5 millimeters |
| Item Weight | 420 g |
| Manufacturer | Signi Industrial (Shanghai) Co.,Ltd |
| Material Type | 24 GRIT |
| Maximum Rotational Speed | 13300 rpm |
| Model | Fan |
| Number of Items | 5 |
| Part Number | Fan |
| Product Dimensions | 4.5"L x 4.5"W |
| Recommended Uses For Product | Cutting, Grinding |
| Set Name | SIGNI 24 GRIT |
| UPC | 682601960688 |
| Unit Count | 5 Count |
G**O
Perfect
Great product
S**R
Worked well
Worked like a charm to knock down some concrete high spots
J**A
Service and item quality.
All excellent services and product, good quality product and zero issues.
P**7
Works great...
30 seconds and the brick was grind down 1/4 Inch. Way faster than I thought it would...
P**N
Grinding concrete
It does the best job on concrete floors that are painted. We tried everything and these were phenomenal!
R**.
Great Grinding Wheel
Made short work of my job
S**N
Works well but greater height would be better
Works well to clean paint off of cement, only complaint is that it is a little shallow from a height standpoint so you have to have a very shallow dust shroud to make it work. I had to grind off some of the metal bracket on my dust shroud to make the dust shroud lower in height in order for it to work. Could be a crappy dust shroud design from DeWalt so I only took off one star.
A**R
I'm SURE These Work Well on Mastic or Paint
These wheels fit my low-speed grinder (a.k.a. polisher) just fine. Even at only 3600 RPM they do generate a bit of dust, which the vacuum hood picks up, but they also scatter silicon carbide chunks which the hood can't catch. As far as actually grinding goes, these 36G versions aren't the best. I'm trying to remove the thin layer of densifier from my so called "polished" concrete floor so that thinset will stick where I want to lay tile. The slightly open nature of these along with the somewhat flexible and less "jumpy" behavior makes me believe that these would be great for removing paint or gummy mastic from a concrete floor when compared to a diamond disc. However, they fall short when it comes to actually grinding slightly into the concrete. I don't know, could be the choice of 36 grit (which is typical for a diamond grinding disc). Maybe I should have gotten the 16G or even 8G discs. At over $8 each, I'm not sure these are such a great value over budget diamond discs. The disposible nature of them seems appealing, but it's not a plus when they aren't able to do the required job.
Trustpilot
3 days ago
1 month ago