With the Spyderco 400F1S ceramic sharpening steel square even the smallest blades are no longer safe! This sharpening steel is perfect to sharpen, for instance, your pocket knife, multi-tool or other cutting tools.
The sharpening steel is made from aluminium oxide with a fine grain. The hardness is 9.2 on the scale of Mohs. That is almost as hard as diamond to make sure that sharpening rock-solid types of metal and even most carbides is very easy.
The Spyderco 400F1S is dishwasher proof and can handle sterilisation in an autoclave. It is therefore also perfect to sharpen, for instance, dental tools or other medical equipment.
The sharpening steel is meant for fine sharpening work. We recommend using a stone with a coarser grain to sharpen blunt knives.
The sharpening steels are also available as a set.
If the ceramic sharpening stone is clearly affected by metal deposits you can clean it with water, an abrasive sponge and a little detergent to make sure the stone will be like new again.