1)Replaced sharpening head. 2)It is used for Ceramic knife specially. 3)Diamond,ABS, Stainless steel, 1,Applicable ... to kitchen knives of various materials and ceramic knives.2,For ceramic knives, best results and fast.3,Diamond and ... economic and environmental protection.7,Applicable voltage 100-240 VAC, 50HZ—60HZ.It has passed CE . Ceramic Knife Electric Diamond Knife Sharpener