Fillet knife made from 154-CM stainless steel. Handle is black G10 fiberglass resin. The overall length is 11”. Blade length is 6.25”. 154-CM is a newer version of 440-C stainless. The main difference is additional molybdenum, which results in hardness and edge retention that is typically better than traditional stainless alloys, and as such is a favored material for many high-end knives. C 1.05% Cr 14.00% Mn 0.50% Mo 4.00% Si 0.30% This steel has been professionally vacuum heat-treated and cryogenically tempered and has a Rockwell hardness of 59. A slight patina on this steel after continued use is considered normal, but it will not rust or pit. Chefs favor this steel for its unique combination of superb edge retention and ease of sharpening.