I tried Ninja Foodi never dull essential knife system. These are all in a block that has a built in sharpener. The block has 4 suction cups on the bottom. There's 1 chef knife, 1 Santoku knife, 1 utility knife, 1 pair knife, 4 steak knives and 1 shears. They are all very  sharp. The quality of these knives is excellent.