Narex Notch cutting Wood Carving Knife 822530 This knife is manufactured by small tool maker in Czech Republic Blade is designed for notch cutting (see pics) The blade is made from Manganese-Vanadium tool steel and heat treated to a hardness of 60-62 HRc The blade is 40 mm (1 5/8 inches) long x 12 mm (1/2 inch) wide Overall length is 140 mm (5 3/4 inches) long