Demko Knives AD20.5 Clip Point Shark Lock Folding Knife Black Grivory 3" Black DLC

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12/31/25 01:00AM
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  • Overall: 7.5"
  • Blade: 3.25" AUS-10A, DLC, Clip Point
  • Handle: 4.5" Black Grivory
  • Frame/Liner: Steel
  • Clip: Tip-Up; Right Hand
  • Knife Type: Manual, Thumb Stud/Hole
  • Lock Type: Shark Lock
  • Pivot Type: Bearings
  • Origin: Taiwan
  • Model: AD20.5


The new production AD20.5 knife by Andrew Demko of Demko Knives features his all new, exclusive "Shark-Lock" Mechanism.
This "fidget-friendly" lock is situated on the spine of the knife and operates with a ramp-like "fin".

Opening the blade makes the spring-driven lock arm move up and then into a notch in the tang, situating it beneath a lock pin. This range of movement is noteworthy. It’s unique in that the locking mechanism moves forward and back while also moving up and down. This allows for a greater sized blade tang, making a better mechanical advantage in a specific area. And because the drive spring that moves the locking element up into the locked position is contained within the locking arm itself, it won’t be subject to dirt and grime. The Shark-Lock™ is very comparable to most Tri-Ad locks for its size and weight. The AD-20.5 has been tested to 875-inch pounds of torque, this is a very impressive number for a 3.5 oz. knife.

3 Reviews Hide Reviews Show Reviews

  • 5

    Posted by Lucas Wessinger on Sep 12th 2022

    Exactly as expected

  • 5
    Demko Knives AD20.5 Clip Point Shark Lock Folding...

    Posted by Mike Orozco on Jun 11th 2022

    Great knife! One on my favorites to carry. Slim design fits nicely in coin pocket. EKnives never fails to satisfy!!! Thanks EKnives!!!

  • 5

    Posted by Justin Adams on Apr 7th 2022

    A great edc knife. Carry this thing all the time at work. The shark lock is awesome. In and out of the pocket for the job at hand with no problem.

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