From Zwilling, the Bob Kramer Carbon 2.0 10" Bread Knife features: Manufactured in Seki, Japan Straight carbon steel 52100 Designed to Master Bladesmith Bob Kramer's exacting specifications Special hardening process Traditional 3-step hand sharpening for exceptionally high sharpness Double-tapered blade and tang Elegant micarta handle with brass rivets and Bob Kramer mosaic pin 61 Rockwell Hardness = exceptional edge retention Not dishwasher safe – handwashing recommended Imported.