There are 3 different sizes of Global Ni cook's knives. The GN-009 is the most popular size with a good 20cm blade. It is the Global Ni equivelent to the best selling and award winning Global Classic G-2. If you are looking for one good knife, or one knife to start off your Global Ni collection, the GN-009 is probably where you should start. As cook's knives, they can be used for most kitchen tasks, slicing, chopping and cutting and are the 'go to' knives in the Global Ni range. The Global Ni cook's knife additionally comes in a 16cm size as the GN-008 and 26cm as the GN-010. The two smaller sizes also come in fluted versions as the GN-001 and GN-002.