Fox FX-556 B4 Metamorphosis Radius Button Lock Flipper Knife 3.31" M390 Stonewashed Wharncliffe Blade, Green Canvas Micarta Handles with Brass Bolsters
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$310.39

MSRP* : $387.99 | You Save* : $77.60 (20%)
rated 5.0 stars out of 5 Read 1 reviewWrite a Review
Part #: FOXFX556B4 | Fox Knives
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Description

FOXFX556B4: FX-556 B4 Metamorphosis Flipper Knife - Green Canvas Micarta

Fox Knives

The Fox Metamorphosis showcases cutting-edge innovation with a design introduced at Blade Show 2023. At its core lies the unique Radius system, combining safety and smooth operation in a revolutionary mechanism. Crafted with a stonewashed M390 wharncliffe blade, green canvas Micarta handles, and brass bolsters, it delivers exceptional performance and durability. The addition of a flipper enhances its practicality as a versatile tool while doubling as a satisfying fidget feature, offering a playful and engaging experience. The Metamorphosis is a standout choice for both utility and modern flair.

Specifications

  • Blade Length: 3.31"
  • Cutting Edge: 3.25"
  • Closed Length: 4.69"
  • Overall Length: 8.00"
  • Blade Material: M390 Stainless Steel
  • Blade Thickness: 0.160"
  • Blade Style: Wharncliffe
  • Blade Grind: Flat
  • Blade Finish: Stonewash
  • Handle Material: Green Canvas Micarta with Brass Bolsters
  • Locking Mechanism: Radius Button
  • Pocket Clip: (Tip Up, Right/Left Carry)
  • Weight: 5.47 oz.
  • Made in Italy

UPC Code: 8053675927976

Related Categories

Fox Knives, Fox Metamorphosis Flippers Series, M390 Blade Steel, Micarta Handle Material, Folding Knives, Folding Knives Button, Made in Italy

Badges

Product Handle Badge: Micarta Handles
Product Clip Type Badge: Pocket Clip
Product Steel Type Badge: M390

Customer Reviews

Fox FX-556 B4 Metamorphosis Radius Button Lock Flipper Knife 3.31" M390 Stonewashed Wharncliffe Blade, Green Canvas Micarta Handles with Brass Bolstersrated 5.000 stars out of 5 (1 review)
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Fox FX-556 B4 Metamorphosis Radius Button Lock Flipper Knife 3.31" M390 Stonewashed Wharncliffe Blade, Green Canvas Micarta Handles with Brass Bolsters
rated 5 stars out of 5
Jeff B.
 Hyde Park, Ma
Aug 16, 2025
Pros: Blade Material, Blade Sharpness, Ease of Opening, Handle Feel, Handle Material, Lock Ease of Use, Lock Type, Overall Quality
Cons: Weight
What a completely unique, functional, and solid knife this is!
I bought the Fox Metamorphosis primarily because it is a truly different knife, using its "Radius" system to open and close the blade by rotating a button around a circular track, allowing very quiet, controlled, smooth, and non-threatening operation. It also has a standard flipper tab which works nicely and becomes a good finger guard. The blade is great, 3⅓ inches of M390, and the entire knife is TOTALLY solid. (This is NOT a lightweight or small knife!) The handle is also long and wide and grippy enough that I can get a very good hold on the knife with my large hands. This Micarta Metamorphosis is also "handsome", making it a good "gentleman's knife" if you can deal with its weight and size. All in all, the Metamorphosis is one of my favorite pocket knives, and I am very glad I bought it. :-)
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