Everybody loves this Kestrel Spike.  This is a classic design with a modern look.  

Push on the wing, flip your wrist and the blade shoots out.  A great size 4-1/2 inches closed and 8 inches open.  Blade is steel grey 440 stainless with a thumb opener.  Blade is the classic spike style with one sharp edge and one false edge.  Handles are blasted aluminum with black inserts.  

Comes with a pocket clip.