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This FN Big 1500 is almost the biggest hand forged ‘effin big fish knives by Master Kuo. The black scale from the forge forms a natural protective coating that keeps the blade from rusting, and looks pretty cool, too. Made from high carbon spring steel, it has an RC hardness of 60-61 and weighs in at 1.5kg, or just over 3.25 lbs.


  •  Blade: 310 x 195 x 6 mm / 12.25″ x 7.9″ x 0.25″
  • Handle Length: 100 mm / 4″
  • Overall Length: 380 mm / 15″
  • Weight: 1500 g. / 53 oz. ( 1.5 kg./ 3 lbs 5 oz.)

Knife care: Keep clean with warm water and soap. Towel dry immediately. Do not put into dish washer. The edge steel can show signs of surface rust over time. Most surface rust can be removed by sharpening the edge or using a scotch brite pad.

FN big family

In the grand scheme of all the Taiwan Tuna Knives, this knife is bigger than the FN Big 1400, and smaller than the FN Big 1600. The 1500 is meant to be used more like a zipper by using the weight to penetrate into, then push through and slice big fish like like Tuna, Mahi and swordfish. The big belly of the knife also acts as a cleaver that can cut through the bones, head and tail of the fish.

Weight 4 lbs
Dimensions 16 × 12 × 3 in

Master Kuo


Master Kuo FN Big series

1 review for Master Kuo FN Big 1500 Taiwan Tuna Knife, Big Fish Knife

  1. Marco

    It’s a big knife for big fish. Slices like a laser!

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Shipping to USA

Most Domestic USA orders ship within 72 hours of ordering from our Colorado location via USPS. You can track your order from this Link

Shipping International/ outside of USA

Most International orders ship within 72 hours of ordering from our Taiwan location via Chunghwa Post. You can track your order from your countrys postal website or from this Link

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