Aogami No. 2 Double-Edged Horse Mackerel Knife, Black Finish, 3.5 sun (approx. 10.5 cm) This is a double-edged, black-finished horse mackerel knife. Because it's double-edged, it can be used by left-handed people as well. You can fillet sea bream and other small fish with it. The core material is Yasuki Aogami No. 2 steel, with a round handle and comes in a special box. Knife size: Overall length 228mm, blade length 105mm, maximum spine width 2.5mm, maximum width 39mm, weight 65g Warning Please be aware of counterfeit knives that are falsely advertised as being made in Japan. Most knives sold on Yahoo Auctions, Mercari, etc., that are described as being made of V-Gold No. 10 steel are actually counterfeit products made in China.