Get consistently excellent balance, dimensional accuracy and overall quality with the 38A AO Type 01 <=4" toolroom wheel. Crafted with an ultra-friable aluminum oxide abrasive and featuring a versatile vitrified bond, this straight wheel delivers fast, cool, burn-free cutting of super alloys and soft-carbon and tool steels in light to moderate feed-rate environments. Use it with CNC cutting tool machines and cylindrical, surface and ID grinders for truing, dressing, surface grinding and stock removal applications, and when grinding and sharpening tools and cutters.