Chroma Z04 7-3/4-Inch Chef Knife, 32 Layers Damascus Stainless Steel, VG14 Core by Chroma. $225.95. Beautiful design concieved in Porsche design studio in Austria. Easy grip handle. Quality damascus steel 32 layers. Chroma Z04 is a 7 3/4-inch Chef knife made from damascus steel 32 layers with a VG14 hard core center. The concept of this design was concieved in the Porsche studio in Zell See Austria.