Heavy Duty 17″ Pacified Stainless Steel Tuna Grader used to take a 1/4 inch wide sample from the core of the tuna.
The Sashibo is plunged into the fish above the pectoral fin, along the lateral line to extract a tube-like piece of meat to compare it to the texture, color and visible fat of a tuna’s tail sample to determine the value of the fish.