$190.00
Introducing the Millner-Haufen 4½″ Electroplated Diamond Angle Grinding Wheel (PLUS+ Version)
Take your grinding game to the next level with this heavy-duty, electroplated diamond wheel—designed for pros who demand precision, speed, and long-term durability. Whether you’re working with ferrous metals, stainless, cast iron, concrete, tile, marble, or rebar, this grinding wheel cuts cleaner, cooler, and faster than traditional abrasive wheels.
Key Features:
Industrial Diamond Grit – Electroplated onto high-grade alloy steel for aggressive grinding and extended life.
Dual Grit Design – 40 grit on the edge and front face for fast material removal, 80 grit on the rear face for precision finishing and sharpening.
Cooling Slots – Built-in slots help reduce heat build-up, extend wheel life, and minimize warping or overheating during long jobs.
Clearing Channels – Keep debris and metal filings from clogging the cutting surface, maintaining peak performance across softer materials.
Low Spark Output – Reduces flying sparks for a safer, cleaner work environment.
PLUS+ Turbo Threaded Hub – Allows tool-free, flush mounting without a locknut—perfect for hard-to-reach spaces and ultra-smooth operation.
Universal Fit – Designed for standard 4½” angle grinders with a max recommended speed of 15,000 RPM.
Lifetime Replacement Guarantee – Millner-Haufen backs it for life. Worn it out? They’ll send a new one—no questions asked.
Built for:
Fabricators, welders, landscapers, masons, mechanics, and serious DIYers who want pro-grade results without wasting time or money on junk discs.
| Material | Alloy Steel Core with Industrial Diamond Grit |
|---|---|
| Size | 4½" (114.3 mm) |
| Grit | 40 grit (edge/front) + 80 grit (rear) |
| Thread Type | 5/8"-11 Turbo Thread (PLUS+ version – no locknut needed) |
| MAX RPM | 15,000 |
We accept returns within 30 days of purchase for items that are unused, in their original packaging, and in resalable condition. To initiate a return, please log into your Dirt Monkey Shop account and visit the Returns and Refunds section. After receiving your return or refund request, our team will contact you for next steps. Refunds will be issued to the original payment method once the returned item is received and inspected. Shipping fees are non-refundable, and the customer is responsible for return shipping costs.
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Hayden Gancedo (verified owner) –
Just an over priced hard disc it can’t cut 1/8” flat bar mild steel let alone any aluminum. So now I just use it as a hard disc to knock down welds
Patrick (verified owner) –
This thing is a beast! Cuts through steel, concrete — you name it — and barely shows wear. Super easy to attach to my grinder and throws off fewer sparks too. Costs more than cheap discs, but totally worth it since it’ll last way longer. Highly recommend!
Larry Kelley (verified owner) –
I own a multi state exhaust hood service company as use it for cutting two wire stainless steel pressure hoses daily zero issues
Works as described 100% satisfied
RR –
I had their original wheel and used it on everything! This new turbo model make it super easy to flush grind and get some harder to reach spots. Love this company and thier warranty
Mark Vinson (verified owner) –
Works great!
Mark Henry (verified owner) –
Only lasted about 45 minutes. The diamond coating started breaking off. Had to send back for replacement. Does not cut stainless steel or carbon steel nearly as quick or as clean as a standard abrasive cut off disc.
Not satisfied