This used Demko AD20.5 delivers everything you want in a serious EDC folder: smooth mechanics, rugged materials, and a unique locking system that sets it apart. Lightly carried with minor signs of use, it's still ready for action and offers exceptional value for a premium everyday tool.
 
Designed by Andrew Demko, the AD20.5 is built around the innovative Shark-Lock mechanism—a patented system that delivers rock-solid lockup with a fast, fidget-friendly action. Whether you're flicking it open with the thumb stud or thumb hole, the blade snaps into place with confidence. Pull back on the shark fin to release the lock—safe, simple, and addictive.
 
This version features a black-finished AUS-10A clip point blade with a clean flat grind for slicing power and control. The bright orange polymer handle provides a secure grip and great visibility, with steel liners adding strength without excessive weight. Jimping across the thumb ramp and spine gives you full control in detail work or heavy cutting.
 
Whether you're just getting into high-performance folders or you're a seasoned EDC collector, the used AD20.5 hits that perfect balance of innovation, utility, and price point.
 
Specifications:
Overall Length: 7.75"
Blade Length: 3.25"
Cutting Edge: 3.00"
Blade Thickness: 0.13"
Blade Width: 1.03"
Blade Material: AUS-10A Stainless Steel
Blade Style: Clip Point
Blade Grind: Flat
Finish: Black
Edge Type: Plain
Handle Length: 4.50"
Handle Material: Orange Polymer
Handle Thickness: 0.38"
Frame/Liner: Steel
Weight: 3.40 oz.
Opener: Thumb Stud, Thumb Hole
Lock Type: Shark-Lock
Pocket Clip: Tip-Up (Right Hand)
Pivot Assembly: Bearings
Designer: Andrew Demko
Made in Taiwan