Brand TJC Model TJC-023B Quantity 1 piece(s) per pack Color Black Material Zirconia Specification 4 inch ceramic knife blade size: 105mm (length) x 22mm (width) x 1.7~1.8mm (thickness) knife overall length 215mm; 5 inch ceramic knife blade size: 130mm (length) x 26mm (width) x 1.9~2.0mm (thickness) knife overall length 245mm; 6 inch ceramic knife blade size: 150mm (length) x 35mm (width) x 1.9~2.1mm (thickness) knife overall length 275mm. Other Features Never rust under normal operation; Non-toxic and environmental will not leave any metallic taste and keep its original taste. Packing List 1 x 4 inch ceramic knife 1 x 5 inch ceramic knife 1 x 6 inch ceramic knife