The K4 is a compact chef's knife. It's made of a stainless steel blade with 0.7% carbon and hardened to 60 HRC, blue glazed and hand polished with hand-shaped and polished walnut wood handle.
Robert Herder Windmuehlen knives are hand made in Solingen Germany utilizing old hand work techniques. The fine hand ground blades are extremely light and thin and offer a great cutting feel that is not possible with chunky mechanized ground blades. There is no excess steel on the blades, and the slight convexity makes for reduced friction and sticking during cutting. Robert Herder Windmuhlenmesser have worked hard to establish an apprentice program at their workshop to preserve old techniques that nearly disappeared from Solingen.