Kiridashi Kogatana marking knives are made by laminating a high carbon very hard steel (which will take an edge like no other steel) to a softer but tough steel backing. Available in four different widths - 9, 12, 15 and 18mm, the latter being the most commonly used whilst the smaller sizes are for more delicate marking. They can be used as they are or with a wooden handle and sheath construction. All the knives are bevelled for right hand use. Due to the extreme hardness of the steel they should only be used for marking and not for carving. Supplied in a plastic protective wallet. Length 170mm.