Wusthof Classic 4.5&rdquo; Utility Knife 4572-7/12 Precision-forged from a single piece of high carbon stainless steel Black polyoxymethylene (POM) handle Full tang that is triple riveted to the handle for precise control Precision Edge Technology (PEtec) produces a blade that is 20% sharper with twice the edge retention Tempered to 58 degrees Rockwell