This continuous double-sided diamond sharpening stone surface is suitable for a variety of tools and blades. The magnetic holder features a cutout for tool and knife axles. With the MagnaBase system, the sharpening stones can be easily secured, swapped, and removed from the magnetic holder, allowing for quick grit changes while sharpening. Sharpening with diamonds is fast and easy, requiring no oily lubricants; you can sharpen dry or with water. The solid construction ensures consistent performance over many years and reliable service. Craftsmen, chefs, and other professionals rely on the outstanding quality and immense versatility of DMT products for the care of their tools. Made in the USA.