What is the maximum rpm for this wheel? thanks

I used it on a 11,000 rpm DeWalt 4" grinder and worked great

What is the arbor size?

Should it be 7/8 inch? The picture shows arbor is 0.86 inch which is 7/8 inch.

need actual diameter of the flat area at bottom of concave area around mounting hole?

I didn’t measure but it appeared like 7” to me.

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💎 Grind smarter, not harder — elevate your edge with turbo precision!

4 INCH PRECISION FIT - Perfectly sized 100mm diameter with 22mm arbor for seamless angle grinder compatibility.
MULTI SURFACE MASTERY - Effortlessly smooths marble, tile, concrete, and field stone—dry or wet—for flawless finishes.
PLUG PLAY EFFICIENCY - Easy installation and operation get you grinding faster, with less downtime and more results.
HEAT TREATED POWERHOUSE - Robust cup design ensures superior heat resistance and grinding efficiency under pressure.
DIAMOND TOUGH LASTS LONG - Premium diamond segments engineered for extended lifespan and consistent performance.

The HRLORKC 10cm Concrete Turbo Diamond Grinding Cup Wheel features 12 heavy-duty diamond segments with a heat-treated cup design, delivering long-lasting durability and high grinding efficiency. Compatible with standard 4-inch angle grinders, it excels in smoothing marble, tile, concrete, and rock surfaces using dry or wet methods. Engineered for easy installation and professional-grade results, this grinding wheel is a must-have for precision-driven professionals seeking reliable performance.

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