KASUMI TITANIUM KNIFE SET (22020CHEF, 22013SMALL CHEF & DIAMOND SHARPENER) KASUMI TITANIUM KNIFE 22020 CHEF BLUE : Full length : 34cm Blade length : 20cm Weight : 125 KASUMI TITANIUM KNIFE 22013 SMALL CHEF BLUE : Full length : 25cm Blade length : 13cm Weight : 45g KASUMI DIAMOND SHARPENER: SIZE3,318,53,9 Weight : 87g Whetstone wheel (left side) is for all kinds of metal blade. Diamond wheel (right side) is for ceramic knife.