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Master Kuo GL 500mm Long Taiwan Tuna Knife is a big fish knife with a long, straight blade. It is used to make the cross sectioning cuts on large fish like Tuna, Mahi, swordfish, etc. It also makes for one giant brisket or BBQ knife! The GL500 is essentially an oversized chef knife. This model uses a stainless steel clad with a Japanese carbon steel core and a stainless steel handle. Hardness is RC 60-61. A custom leather sheath is included.


  • Blade: 510 x 95 x 3 mm / 20″ x 3.75 x 0.125″
  • Handle Length: 110 mm / 4.25″
  • Overall Length: 625 mm / 24.5″
  • Weight: 1,000 g. / 35.2 oz. (1 kg / 2.2 lbs.)

Knife 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.

GL series family


Weight 2.5 lbs
Dimensions 26 × 6 × 6 in

Master Kuo


Master Kuo GL Series

1 review for Master Kuo GL500 Taiwan Tuna Knife & BBQ Knife

  1. UDS Texas

    This is one serious knife for BBQ! Get it on at Ugly Drum Smokers Texas!

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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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