Demko Knives AD20.5 Shark Foot Shark-Lock Knife Exclusive Jade Grivory (DLC)

The highly sought after AD20.5 knife from Demko Knives gets a Blade HQ Exclusive upgrade with jade Grivory handle scales and a DLC-finished blade!


  • Black DLC finished "shark foot" blade made from AUS-10A stainless steel.
  • Thumb stud and thumb hole openers.
  • Exclusive jade Grivory handle scales over steel liners.
  • Demko Knives' exclusive Shark-Lock.
  • Interchangeable, stonewashed pocket clips for left/right carry.

The Demko Knives AD20.5 is the next big thing in the EDC world, offering a top-quality folder at a fair price. It is as fun to fidget with as it is practically functional, which is largely thanks to the Shark-Lock: a radical new system that provides solid lockup and can be trusted to keep your fingers safe. The lock is operated by pulling the fin back with your thumb or index finger—a motion similar to using a flipper opener. When the blade is locked open, the fin serves as a comfortable thumb ramp, which is jimped to increase your control over the knife. Additional jimping on the spine and a high grip option also contribute to the knife??s usability. The AD20.5 hits the sweet spot that every EDC folder shoots for, and is likely to usurp that coveted spot in your pocket soon after dropping into your collection.

We now offer two new exciting accessories for the Demko AD20.5. First are fully customizable white grivory scales: keep them white if that's your vibe, or Rit Dye them whatever color (or colors) you want! Second is a set of high-quality replacement springs for the Shark-Lock, should misfortune strike and the original spring gets damaged.

Item #BHQ-141477
Our Sale Price: $129.99!
Out of Stock
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  • Overall Length: 7.375"
  • Blade Length: 3.00"
  • Cutting Edge: 2.75"
  • Blade Width: 1.13"
  • Blade Thickness: 0.13"
  • Blade Material: AUS-10A
  • Blade Style: Sheepsfoot
  • Blade Grind: Flat
  • Finish: Black
  • Edge Type: Plain
  • Handle Length: 4.50"
  • Handle Width: 1.00"
  • Handle Thickness: 0.40"
  • Handle Material: Polymer
  • Color: Jade
  • Frame/Liner: Steel
  • Weight: 3.52 oz.
  • User: Right Hand
  • Pocket Clip: Tip-Up
  • Knife Type: Manual
  • Opener: Thumb Hole, Thumb Stud
  • Pivot Type: Bearings
  • Lock Type: Shark-Lock
  • Brand: Demko Knives
  • Model: AD20.5
  • Designer: Andrew Demko
  • Country of Origin: Taiwan
  • Best Use: Everyday Carry
  • Product Type: Knife

Customer Reviews

Truly iconic!
Jason H. on Jul 10, 2022

As a knife collector, this knife having a very unique lock, is a must have. Craftsmanship, design, quality of materials, and operation are excellent. Very fidgety and I love the shark lock. There is no fault to be found anywhere. This is a knife one wants to keep in the hand instead of stowing in the pocket. Buy it!

Not sure about this one
Phillip R. on Mar 16, 2022

I’ll start by saying I’m a Demko fanboy from his C.S. days and customs. I like the shark lock although mine came very sticky and I have to slightly pry back on it for smooth action. This one came with side-to-side blade play which I was able to tune out, it also has a slight lock rock that I assume will break in overtime. The biggest issue I have is it didn’t come sharp, and I can’t seem to get an edge I’m happy with on it. It’s like the aus10 is crumbling when I try to sharpen it, maybe a heat treat issue I’m no expert. Overall disappointment, for the price factoring in the materials, used I expected top-notch fit and finish to justify it. Not recommendable at this point, hopefully, they improve with time.

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