The newest evolution of the Cara Cara has a full-flat ground high performance 8Cr13MoV blade. Shaped like a "comet" the hole in the blade symbolizes quality and careful manufacturing tolerances.  On the blade's spine is a group of crosshatching called jimping.  Jimping enhances the thumb's grip on top of the blade making cutting slip-resistant.  Available for the first time with a four-way clip that carries tip-up/tip down or left/right-handed, it attaches inside a pant's pocket where it rides deep and confidently.  A finger choil enhances the ergonomic stainless steel handle adding comfort and control.  Mid-positioned back lock has a David Boye cut away dent, a safety feature that allows tightly gripping the handle without unintentionally releasing the lock. Upgrade alert!  byrd knives are the subject of several bright and fresh engineering refinements for 2010 with improved ergonomics, four-way clips and full-flat ground blades.  Like Spyderco knives, byrd knives are subject to our penchant for C.Q.I. - Constant Quality Improvement.  As manufacturing processes and material availability improves, so do the byrds.