











⚙️ Grind faster, last longer, finish sharper — own the edge of precision!
The DEWALT DW8310 4-1/2" x 7/8" 120 Grit Zirconia Angle Grinder Flap Disc combines zirconia grit for 3x faster material removal with a premium abrasive cloth that lasts 15x longer than standard discs. Featuring a Type 29 fiberglass backing for an optimal 20-25° grinding angle, it delivers professional-grade durability and precision for metal grinding tasks. Compatible with DEWALT angle grinders, it supports up to 13,300 RPM for efficient, cool, and consistent performance.

| ASIN | B000BPS98O |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #15,678 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #19 in Flap Discs |
| Brand | DEWALT |
| Color | Multi |
| Compatible Devices | Angle Grinder |
| Compatible Disc Grinder Tool Models | DEWALT DCG416B |
| Construction Type | Coated |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,061) |
| Cutting Diameter | 4.5 Inches |
| Date First Available | January 1, 2008 |
| Finish | Brushed |
| Global Trade Identification Number | 00028877310466 |
| Grit Material | Zirconia |
| Grit Number | 120 |
| Grit Type | Fine |
| Included Components | 4-1/2" x 7/8" 120 Grit Zirconia Flap Disc |
| Item Diameter | 4.5 Inches |
| Item Package Quantity | 1 |
| Item Thickness | 0.88 Inches |
| Item Weight | 1.41 ounces |
| Item model number | DW8310 |
| Manufacturer | DEWALT |
| Material | Blend |
| Maximum Rotational Speed | 13300 RPM |
| Measurement System | Metric |
| Number Of Pieces | 1 |
| Part Number | DW8310 |
| Pattern | Solid |
| Product Dimensions | 4.5"L x 4.5"W |
| Recommended Uses For Product | Grinding |
| Shape | Rectangular |
| Size | 7/8-Inch Hub 1 Count |
| Style | 120G |
| UPC | 028877310466 |
M**T
Turns Rusty Metal Into Showroom Shine
This flap disc is the real deal. DEWALT slapped some zirconia grit on a wheel and basically handed you a surface-smoothing weapon of mass reduction. Whether you’re cleaning up welds, smoothing edges, or shaving down that "oops" cut you swore was straight—this thing handles it like a champ. Durability? Let’s just say it outlasted my attention span and my playlist. It cuts smooth, runs cool, and doesn’t shred itself to pieces halfway through a job like those bargain-bin brands. Put it on your grinder and let it work its magic. You’ll be turning rough steel into buttered toast in no time.
D**D
Good price and High Quality
I used this along with an angle grinder to sharpen my lawn mower blades. It did a great job and I did not notice any damage to the disc after the job was done. I anticipate being able to reuse this disc for many more blade sharpenings. It was able to successfully sharpen the blade and I knew it was working from all the sparks that were generated at the time. I think this is a great value.
K**I
Work awesome
These work great. They don't damage wood and really strip the varnish without gumming up
D**.
Not sure
The product is great but why add special instructions for the delivery driver if they are not going to follow them. Leave on porch real simple. Not at mail box out at the road.
J**S
Sharped
Sharped and durable
A**R
Great Buy
Purchased a 40 and 80 grit for a fiber glass repair on my boat. Quickly realized how versatile they are. Used to sharpen mower blades, sand wood and fiberglass, and for rust removal. These are much faster and thorough than wire brushes for rust and paint removal..not to mention safer. Were also almost half the price of Lowes and Home Depot. I use air and a stainless brush to clean. Highly recommend.
C**O
Excellent
Good tool
M**5
Tough grinner disc
Excellent quality and durability The price was a bargain for what you can get out of this grinner blade/disc
P**T
Good wheels, have lasted well and perform well
B**O
Have only used once and they do a good job sharpening mower blades.
A**R
Funciona muy bien, buena fabricación por el precio correcto y materiales de primera, llegó rápido y bien empacado.
E**Z
Cumple perfecto
B**4
nice thread on feature is good for me for a big project where I only have one angle grinder. good quality and lasted a long time.
Trustpilot
2 weeks ago
2 weeks ago