Two Grit—A different grit on each side enables two-step sharpening with one stone. First sharpen your blade with a lower grit, then sharpen again with a finer (higher) grit until the desired edge is achieved.

Three Grit—Three separate grit surfaces enables multistep sharpening with one stone. First sharpen your blade with a lower grit, then sharpen again with progressively finer (higher) grits until the desired edge is achieved.

Novaculite—Novaculite has extremely fine grains that cut very slowly for the most control over sharpening. Also known as Arkansas stones.

Aluminum Oxide Abrasive—Aluminum oxide cuts more slowly than silicon carbide for finer control. Also known as India stones.

Silicon Carbide Abrasive—Silicon carbide cuts quickly with light pressure. Also known as Crystolon stones.

Oil Filled—No need to stop and clean these stones as you polish—they’re filled with oil to keep debris from getting stuck in their pores. You’ll also need an oil-based lubricant to wash away debris and reduce friction and heat on your workpiece.

Antislip Feet—Keep the stone in place to maintain a steady angle while you sharpen.