The Japanese word for whale is "kujira" and these super cool kogatanas feature a minke whale design. The steel is SK5 carbon steel which is similar to 1080 steel. It's an ideal steel for a tool like this.
Weight: 2.1 oz/60g
Blade Length: 58 mm
Overall Length: 172 mm
Spine Thickness at Heel: 2.9 mm
Blade Height at Heel: 26.2 mm