Shop Cold Steel 6″ Utility Kitchen Polymer Black. The Cold Steel Kitchen Classics series feature high performance ice tempered, cryo-quenched and precision flat ground 400 series steel blades for exceptional cutting performance. All models in the series come with a razor sharp edge that lasts and lasts, and some have serrated edges uniquely appropriate to the tasks they were designed to do. Summary of Cold Steel 6″ Utility Kitchen Drop Point Polymer Black Knife (Satin) CS 59KSUZ Overall: 10.75″; Blade: 6″ l German 4116 Stainless l Serrated Edge; Handle: Black l Kray-Ex; Other Info: German 4116 Cryo Quenched stainless blade. Handle features a hard Zy-Ex core.