WMF Spitzenklasse 5-1/2-Inch Utility Knife WMF Spitzenklasse all purpose utility knife Blade length 5-1/2 inches; full knife length 10 inches Knife blades made from special forged blade steel that is extremely hard, robust and rust-free, guaranteeing high cutting capability and presisting edge retention Mix and match with additional items in the WMF Spitzenklasse collection Hand wash recommended to protect the blades