Microtech Ultratech Gen 4 11224-10OD Stonewashed Double Edge Blade, OD Green Handle

These are the newest Gen which are not ZBP, gen 3 is ZBP these are gen 4 which has the normal dual fuel drive system

The New OTF Dual Fuel Drive system makes these knives the smoothest Microtech has ever created, allowing for exceptionally effortless opening and closing. The new switch is mounted on a milled platform (Crud Cutter), which helps to minimize pocket lint and debris, reducing friction and enhancing reliability while decreasing the need for frequent cleaning

This new style OTF Auto from Microtech is a reminder of the company's roots in the auto market, while showing of the subtle engineering upgrades that keep them in the forefront of the industry while keeping the products they make affordable for everyone.