ISAAC21 INC. was established in 2001 to apply esoteric science principles to living, pursuing an improved life, using creative and innovational ideas based on the love for humanity."ISAAC" is the non-stick hand-made knife blade, which employs high-grade raw materials and state-of-the-art processing technology such as hot forging. With an ordinary knife, food sticks to the sides of the blade due to surface tension and action-reaction forces. However, since ISAAC has a 1cm-wide sloping embossed blade, it fundamentally eliminates surface tension. When the blade gets dull, there is no need to forcefully sharpen it on a whetstone or use a motorized or ceramic knife sharpener: just lightly rub it against the rod of a knife sharpener (as long as it is harder than the knife), or the back of a knife with the same solidity, or even the back of stainless steel scissors. The high-quality ISAAC knives feature high hardness and durability, employing sub-zero and ice-hardening treatments. Special heat treatment (hot forging method), with quenching from 1,060 to -80 degrees contributes to their outstanding sharpness and no-stain properties. Also, ISAAC knives employ high-quality raw materials: molybdenum and vanadium steel are added to stainless steel, enhancing sharpness, corrosion resistance and solidity to the highest level (the same quality as a surgical scalpel). ISAAC Dynasty series are for the high-price markets, while ISAAC is for the middle and low price ones. Models come in sets or are sold individually. The popular ISAAC Dynasty IS300-0804A model is a high-quality 4-piece set, consisting of an 8" chef&＃39;s knife, a 7" multi-slicing & carving knife, a 4.5" serrated-blade paring knife and a 3-line wooden block.