The Craftsmans knife has been developed and adapted to suit the needs of craftsmen, manufactured in Japanese knife steel. It has a unique method for attaching the sheath around a button on your work clothes means it does not loosen, but is easy to remove. The knife blade is manufactured in 2.5mm carbon steel that has been hardened to 58-60 HRC with the cutting edge sharpened in several stages with a final honing on a leather strop. The handle and sheath are made of extra durable PP plastic, if your belt is thick, cut away the small pin on the cover.