Andrew Demku  Is a highly respected knife maker , he comes from Western Pennsyvania were he grow up and started making knives in the school metal shop.

the man who designed the TRI-Ad lock. the Scorpion lock, and the Shark lock .   

 The AD20.5 by Demko Knives features the all-new Shark-Lock®, designed and engineered by Andrew Demko. The Shark-Lock mechanism is situated on the spine of the knife and operated with a ramp-like ‘fin.’ Available in two different blade shapes, this knife features ball bearings on the pivot pin, steel liners, and Black G10. The AD20.5 comes standard with a right-handed pocket clip, and also includes a left-handed pocket clip.

   The AD20.5 Shark lock in Orange,

Overall length         10.16 cm  4 inches closed    

Blade length             7.62   cm  3inches

Blade Steel               AUS-10A   Stainless Steel

Blade Finish              Stone Washed Finished

handle material       Orange Givory

Blade shape              Wharncliffe

Pocket clip