Hoback Knives Black Fallout OSF Flipper Knife, CPM-S35VN Black Fallout Blade

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The OSF flipper knife by Jake Hoback of Hoback Knives is a folder/flipper model that was built by Jake back in 2010 and is unique to the fact that the OSF (Open Source Folder) can be built by knife enthusiasts alike thanks to the fact that Jake wanted to gift the information and show them a finished product (see jakehobackknives.com for details). Each frame lock designed model features pivot thrust bearings, a HRD (Hoback Roller Detent), stainless steel lock insert with over-travel protection and cold-formed bearing races. This model features a blackend stonewash (Black Fallout) titanium handle, a modified sheepsfoot style blade in a blackend stonewash (Black Fallout) finish and the titanium pocket clip is designed for tip up carry only but is eligible for a left or right hand carry option. Made in the USA.


  • Blade Length: 3.5"
  • Overall Length: 8.75"
  • Blade Material: CPM-S35VN Stainless Steel
  • Blade Finish: DLC Black / Stonewash
  • Handle Length: 5.25"
  • Handle Material: Titanium
  • Weight: 6.4 oz.