Sabatier Edgekeeper knives have sharpening rods built into each storage sheath so as to automatically sharpen the knife blade every time you remove or replace the knife into the storage sheath.The Self-Sharpening mechanism is highlighted in Red at the opening of the protective sleeve.The sharpening rods are aligned to sharpen the blade at the correct angle, which helps take away the guesswork and helps to keep knives sharp for optimal performance.This 7.6cm - 1.3cm parer knife with self sharpening sheath is expertly crafted from superior quality, high-carbon stainless steel.The triple riveted handles are perfectly weighted and balanced for optimal control.Hand wash.