... hardness just second to diamond which give the ceramic knife its outstanding sharpness and edge retention Ergonomically ... handle (ABS) in black which keep the ceramic knife lightweight and colorful, added TPR on handle ... dropping, throwing or general misuse Avoid using the ceramic knife to cut seeds, bones, frozen food ... ShenzhenLead Time: 20 - 25 days 5pcs Ceramic Knife Set, FDA and LFGB Certifications