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The Master Kuo G-5 Large Taiwan Tuna Knife is designed to cut the heads off of large fish, slice the fish from end to end, and to cut the body into steaks. The curved leaf shape is really handy for butchering large fish like Tuna, Mahi, and Grouper.

This G5 is made with 3 layered laminated steel. The outer steel is stainless while the inner core steel is a traditional Japanese High Carbon SK5 steel, and has a RC hardness of 60-61.

Dimensions –

  • Blade: 200 x 120 x 4.5mm / 8″ x 4.75″ x 0.18″
  • Handle Length: 100mm / 4″
  • Overall Length: 305mm / 12″
  • Weight: 525 g / 18.5 oz

Care: Keep clean with warm water and soap. Towel dry immediately. Do not put into dishwasher. Stainless clad outer steel will not rust, but exposed SK5 core edge steel can show signs of surface rust over time. Most surface rust can be removed by sharpening the edge.


g series family
Master Kuo Family

Master Kuo knives are some of the sharpest factory sharp knives we’ve ever seen, but they are capable of even more after our professional sharpening services.We recommend the 2000 and 5000 Grit services for this knife. You can also add a custom made leather sheath.


Weight 1.5 lbs
Dimensions 14.25 × 5.5 × 1.25 in

Master Kuo


Master Kuo G series

4 reviews for Master Kuo G5 Large Butchering Cleaver – Taiwan Tuna Knife

  1. Bill Pudim

    Love the products! Keep them coming, G-5 Taiwan Tuna Knife is good.

  2. Dave S.

    This is a really cool knife. very different than my old fillet knives! Love it.

  3. Daniel Mohle

    I am a knife connoisseur and collector. I have also been in the food service industry for well over 20 years. The products offered by this company are very well made and built to last.

  4. Christian

    I’ve been fishing for a long time, and fillet knives always had limitations when dealing with larger fish. THE. G-5. IS. AWESOME. I can’t go back now.

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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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