This is a right and left hand marking knife set made by Narex Tools of the Czech Republic. These knives will draw a much finer line on wood than an awl or pencil. They are beveled on one side only to keep the cut absolutely tight to your rule or square. Defines an exact line for starting a chisel or saw blade. Blades are 1/2 inches wide by 1/8 inch thick and 6 1/4 long. Made from super hard tempered and hardened high speed steel. Will take and hold an excellent edge.