The Sait Attacker High Performance Wheel features a ceramic aluminum oxide grain. The uniform high density grain structure has excellent durability and is self sharpening for long life and a cooler cut. The wheel offers extremely fast stock removal on hard metals while keeping pressure at a minimum. The wheel is ideal for use on stainless steel and other high tensile alloys as well as ferrous metals (iron, steel, welds, etc.). Includes 25 wheels.