REX-CUT 730000 - Grinding Wheels, 4-1/2" X 1/4" X 7/8", Type 27, Zirconium/Aluminum Oxide, Pack of 25

Use on stainless steel, aluminum, mild steel, hard face, titanium, and alloys

High performance zirconium and aluminum oxide grain combination

Grinds smooth and quiet

Contains only 0. 035% iron, with less than 0. 1% of iron, chlorine, and sulfur combined

13, 300 Max RPM