[Features] · A professional stick grindstone that boasts excellent quality, grinding capacity and ease of use. · An extensive product lineup of stick grindstones with different abrasive grains, binders, degree of bonding and particle sizes. [Applications] · Optimal for pre-polishing with polishing compound and diamond compound. · It is also suitable for intermediate finishing of everything from soft materials such as aluminum and copper to high hardness materials such as alloy steel and tool steel.