A 2.5" inch Cold Steel utility knife with a Tri-Ad Lock? Japanese AUS8A Steel?
Quite Possibly the toughest and best folding utility knife ever made..
 
Weight: 2.5oz
Blade Thickness: 2.75mm
Blade Length: 2-1/2"
Blade Steel: AUS8A Stainless
Handle Length/Material: 3-1/2" Griv-Ex™
Overall Length: 6"
Pocket / Belt Clip: Reversible
Knife Type: Utility Folder
Blade Shape: Wharncliffe
Locking Mechanism: Tri-Ad Lock