The Gamakatsu 98417-25 Octopus Hooks, Size 7/0, Ns Black, 25-Pack. The octopus hook has long been known for its durability and strength. Made of premium gage high carbon steel, this 25-pack of octopus hooks comes in a size 7/0 with a ns black finish and are exceptionally sharp. Gamakatsu is the leading fish hook manufacturer in Japan and worldwide.