• A great general-purpose finishing stone. 
• Contains brown aluminum oxide which is tough, blocky, and a faceted abrasive grit.
• Generally used wet but can be used dry for roughing applications.
• All mold and tool steels of all hardness such as A2, D2, S7, H13, P20, 420SS, and soft non-ferrous metals such as Aluminum and Beryllium.

Warning This product can expose you to chemicals including Ceramic fibers (airborne particles of respirable size), which is known to the State of California to cause cancer. For more information go to www.p65warnings.ca.gov.