Miracle Blade World Class Series White Ceramic 7-piece Knife Set with Protective Blade Covers RUST - No metal means no rust. But be careful these knives are not for hacking into large bones and if dropped their tips can easily break due to how fine and thin the blade is. ODORS - Ceramic material is dense and not very porous at all. This keeps the blade from transferring odors from one food item to another. SHARPNESS - The materials that make up a ceramic blade is very hard. Its the second hardest material, right after diamonds. After it has been sharpened, it can keep its razor-sharp edge wont dull. WEIGHT - Ceramic material is very light weight. The lighter the weight, the less strain on your arms and shoulders. You can rip through all your cutting like a pro. SANITARY - Ceramic blades do not attract food to stick and a quick rinse in warm water will get your ceramic knife a lot cleaner than thoroughly scrubbing a metal knife.