The 0055 is a departure from the usual Zero Tolerance Design. The 0055 is a collaboration between Zero Tolerance and Gus Cecchini of GTC knives. The flipper tab is hidden so that it doesn't interfere when reaching in your pocket. Once the knife is out and ready you pull up on the flipper tab and deploy the knife. Easy Peasy.
The knife is a full Titanium with an S35VN Blade. The blade has a beautiful compound grind and is surprisingly useable. This knife is different but really cool.