KA-BAR has recently shown off their latest offering in folder knives with the new State and Union OSF folder knife.

KA-BAR states “The Old School Folder “OSF” is State & Union’s first take on a frame lock folding knife.

The OSF was designed with KA-BAR’s traditional leather stacked fighter in mind, which is why the blade has a fuller or “blood groove”.

This knife is a flipper and the pivot is on caged bearings for quick and easy opening.

So, if you’re a fan of flippers, this is a knife you need to get your hands on!

Equipped with a 3.75” CPM S35VN steel blade, 6Al-4V titanium frame and all 6Al-4V titanium hardware (excluding stop pin, caged bearings, washers, pivot barrel, and lock-bar stabilizer), this knife is built to last a lifetime.

The OSF’s pocket clip can also be arranged for tip-up or tip-down carry, so whatever your carry preference may be, we have you covered.”


  • WEIGHT:0.4 lb
  • BLADE TYPE:Folder
  • BLADE LENGTH:3.75 inches
  • OVERALL LENGTH:8.625 inches
  • SHAPE:Spear
  • LOCK STYLE:Frame Lock
  • GRIND:Flat
  • KNIFE MANUFACTURED IN:United States US flag
  • BLADE THICKNESS:0.156 inches
  • BLADE WIDTH:1.45 inches

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