The Marble’s® Redi-Edge Tacticle Pocket Pro Hunting Knife sharpener takes the guess work out of knife sharpening and insures a consistent, sharp edge every time. The sharpening blades are formulated from micro-grain carbide steel that is harder than cutlery steel. If you like your blades honed and polished as well as sharp, the Marble’s® Redi-Edge can do the job. It has a hardened ceramic honing surface chemically bonded to its anodized aluminum handle. Use it like a whetstone—it won’t wear off.