While we haven't any history with these ceramic knives, they are very sharp and seem well put together and finished. Time, and the occasional bone or hard surface will determine the longevity of their cutting edges.
These knives are extremely sharp and have a good feel to them. The nonslip handles are weighted and balanced. I was expecting flimsy blade covers but these are very sturdy. Very nice set of ceramic knives for a great deal.
I've had these knives for a few months now, and I tell you, they are ridiculously sharp and light.
HOWEVER, today, the large one fell off from 1M height, now it's in halves.
Here is a photo:
I'm not really happy, as I know that I have to take intensive care of the yet-to-be-broken ones.
Brand new ceramic, high carbon and stainless steel knives were put into a Honda "sharpness testing" machine. The tester holds each blade with a constant force against a stack of paper and then slides the blade 3.5 inches to produce a slicing action. Paper was used because it's much more abrasive than vegetables. As the test is repeated 1,000 times, the ceramic blade stays sharper longer than the other two blades. Unparalleled Purity: In addition to wear resistance, Dr. Tech advanced ceramic knives are chemically inert so foods look and taste the way they should. The smooth, polished surface resists germs and is impervious to acids, oils and salts. Clean up is easy too: simply wash and let dry. Because they're ceramic, Dr. Tech knives and kitchen tools won't brown foods, won't transfer a metallic taste or smell, and will never rust. Ultra Lightweight: Half the weight of traditional knives and kitchen tools, these products are a joy to use. Suddenly, preparing salads, soups, omelettes and other dishes is fun again. Perfectly balanced and lightweight, Dr. Tech ceramic knives reduce fatigue during repetitive cutting tasks. Advanced Ceramics: formed by nature, perfected by science: Like diamonds and sapphires, the elements of ceramic are formed in nature through thousands of years of crystallization, extreme temperatures, and literally tons of pressure. The result is a pure, dense, unrelenting material that is 50% harder than steel, close to diamond in hardness. Advanced ceramic is second only to diamond in hardness: Long-wearing and corrosion-free, ceramic parts are often used in bone replacement procedures. In fact, ceramic components are used in satellites, racecar brake pads and other applications that require extreme wear-resistance. For those components that would virtually disintegrate if made from metal, ceramic is the material of choice. Ceramic knife is a high-end product which is ideal for either self use or a decent gift. It is a symbol of good quality life and great taste.