Seki Magoroku Aofuji San-Mai Gyuto Kitchen Knife 180mm - Made in Japan and a CPM-M4 blade

and a CPM-M4 blade

Handle material: G-10

That concept ultimately evolved into the Matriarch 2

sadly a material that is usually overlooked by manufacturers

Spyderco always taken great pride in our efforts to push the envelope of performance by offering exotic blade steels in our knives

Seki Magoroku Aofuji San-Mai Gyuto Kitchen Knife 180mm - Made in Japan and a CPM-M4 bladeSeki Magoroku Aofuji kitchen knives are made in Japan with a San Mai (3 layer) blade consisting of a high carbon steel core sandwiched between stainless steel cladding. Blade Length: 180mm Overall Length: 302mm Weight: 149g Blade Material: San Mai (3 layer) blade consisting of a high carbon steel core sandwiched between stainless steel cladding. Edge: Double Bevel Handle Material: Wood Made in Japan Below video shows the smaller 120mm version: