... zirconia material, 3"-7" blades white/black, ABS TRP colorfule handles. Our GTT ceramics knife is applying "tape casting" method. ... main methods compating and injection, tape casting produce ceramics knife with many advantages. Knife surface avoids second process of polishing, ... dropping for your safety GTT ceramic knife set, 4pcs with acrylic holder, zirconia white blade with peeler, ABS TPR handles