Wusthof 4603 Boning Knife, 6 Inch, Black Precision-forged from a single blank of high carbon stainless steel Full tang that is triple riveted to the handle for precise control Precision Edge Technology (PEtec) yields a blade that is 20% sharper with twice the edge retention. Tempered to 58 Rockwell Full bolster and finger guard Dishwasher safe; hand wash recommended Made in Germany