Wusthof Ikon Blackwood 5 in. Santoku Knife, Hollow Ground Forged from one piece of specially tempered high carbon steel to ensure outstanding strength Triple-riveted handle shells, full tang handle Handle made of Grenadill wood (African Blackwood) - one of the hardest types of wood in the world. All farming is limited to a small quantity and government- controlled Not dishwasher safe, wash by hand only. Blade length 14 cm (5")