

⚡ Elevate your grind game — precision, power, and protection in one pad!
The Mercer Industries 4-1/2" x 5/8"-11 Standard Backing Pad is engineered for high-speed angle grinders, supporting resin fibre sanding discs with a durable yet flexible polypropylene construction. Rated for up to 13,300 RPM, it ensures secure disc attachment and adaptive sanding performance, making it a must-have for professionals seeking reliable, efficient finishing tools.







| ASIN | B003PFLT3O |
| Arbor Hole Diameter | 0.63 Inches |
| Batteries Required? | No |
| Best Sellers Rank | #13,713 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #16 in Sanding Disc Backing Pads |
| Brand | Mercer Industries |
| Compatible Devices | Angle Grinder |
| Construction Type | Coated |
| Customer Reviews | 4.5 4.5 out of 5 stars (410) |
| Cutting Diameter | 4.5 Inches |
| Date First Available | September 13, 2018 |
| Global Trade Identification Number | 00765301523725 |
| Grit Material | Silicon Carbide |
| Grit Number | 100 |
| Grit Type | Medium |
| Included Components | 4-1/2" X 5/8" - 11 Standard Backing Pad for Fibre Discs |
| Item Diameter | 4.5 Inches |
| Item Package Quantity | 1 |
| Item Weight | 2.89 ounces |
| Item model number | 325045 |
| Manufacturer | Mercer Industries |
| Maximum Rotational Speed | 13300 RPM |
| Measurement System | Metric |
| Part Number | 325045 |
| Product Dimensions | 4.5"L x 4.5"W |
| Size | 4-1/2" x 5/8"-11 |
| Style | Standard |
| UPC | 765301523725 |
J**R
Good quality, good fit
This backing pad fits my angle grinder perfectly and does a great job. I am completely satisfied and recommend it.
J**N
PPE,'s 100 %
Sucker works great.Just don't get your hand in the way
R**N
Great sandpaper backing pad, no tightening tool
This item fit my 4.5" grinder great and works great. It didn't come with a tightening tool so I had to make one. Needs to come with this tool.
A**R
Grind on
It fits and works great
M**W
It do what it should
I put this straight into production run in my fabrication shop and it held up nicely for roughly 150 pads. The guy using it is notorious for being rough on tools especially abrasives and I really can’t complain about its performance. What took it out of service was the fact he melted it while running 40 grit. I’m gonna tell ya it wasn’t the tools fault.
G**N
Works well on my drill
Works well for my refinishing concrete countertops.
N**E
Still in one peice!
Seems fine. I'm pretty hard on tools. Been using 24 grit on industrial paint. Been solid, will sit flush.
C**I
It would have been nice to know that it's plastic instead of rubber
It will work for some things.
A**R
It’s sturdy and works as it should.
T**5
First one was imbalanced and returned Replacement was ok
H**Y
Good price but tends to shatter instead of melting/slowly decreasing in diameter over time
A**T
C était un outil qui me manquait, satisfait
S**7
works great for what it was intended for.
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