Smith's Edge Grip Basic single stage knife sharpener is made with carbide blades and a non-slip based giving you added stability while sharpening your straight edge knives. Smith's Edge Grip technology allows for sharpening on a table or countertop edge to prevent your larger knives from dragging over the surface. Compact for easy storage, Single Carbide blades sharpening slot Patented Edge Grip feature, Non-slip base for added stability and control. For use with straight edge knives only.