TRAINER - A non-sharpened blade that is identical in weight and proportion to its live counterpart and used for training and practice purposes. Spyderco trainers are red handled denoting they are non-sharpened. COMPRESSION LOCK - Developed and patented by Spyderco, the compression lock mechanism uses a leaf-like spring from a split liner in the handle to wedge laterally between a ramp on the blade tang and the stop pin (or anvil pin). G-10 HANDLE - An epoxy filled woven glass fiber that is rigid, non-slip, and impervious to temperature changes and chemicals. SPECIFICATIONS - Closed Length (Inches): 4. 49, Overall Length (Inches): 7. 74, Blade Length (Inches): 3. 25, Blade Steel: CTS BD1, Grind: Blunted