Honed and Hand-finished by the most skilled artisans, the knives' laser-controlled edge is incredibly sharp. The sturdy bolster provides the right balance and acts as a finger guard. Precision-forged from a single piece of solid steel, these three rivet handle knives deliver optimum balance and safe handling. Professional chefs worldwide trust the tradition and quality of these impressive knives. This is a classic French chef's knife, with a broad blade and a curved cutting edge for rocking through a chopping task. The 8-inch blade suits most cooks, though those with small hands might prefer a 6-inch knife, and those with bigger hands might choose a 10-inch one. Classic three-rivet handles distinguish Pro S from Henckels's other quality lines, TwinStar, Five Star, and Four Star. Pro S handles are heavier and its knives less weight-forward. The steel used in the Pro S line is identical to that of the Five and Four Star lines. High-tech welding of knives this size and larger combines three steel types into what appears to be a single piece, so a knife's parts have distinct characteristics: a hard edge; a strong, stain-resistant bolster; and a stain- and corrosion-resistant tang. Traditionalists insist on single-piece forging for strength, but Henckels says the invisible welds are actually stronger than the steel. While this chef's knife is dishwasher-safe, hand washing is recommended. --Fred Brack From the Manufacturer A Reliable Standard in Knife Construction Twin Pro S knives are precision forged from a single piece of exclusive-formula, high-carbon, no-stain steel under the all-new Sigmaforge standard. As a result, Twin Pro S knives have improved quality consistency, lasting sharpness, and perfect geometry. Sigmaforge one-piece construction also provides high precision and improved stability of the blade and steel structure, thus improving cutting-edge retention for lasting sharpness. In addition, Twin Pro S knives use J.A. Henckels Friodur ice hardening for corrosion resistance, a process that also contributes to cutting-edge retention. An Ergonomic Handle for Easier Use Features.