The Microtech 231-4TA Tan UTX-85 S/E OTF Automatic Knife Satin Plain Edge M-390 Blade Steel. Microtech has updated and refined the UTX-85 model. It features improved ergonomics, with rounded handle faces, and patches of grooves along the sides to ensure excellent grip. The firing button has been redesigned to increase surface contact for effective engagement, and the glass breaker has a ball-tip set in the trip-angle pattern base to increase its everyday carry manners. This model has a plain edge, satin finished M-390 steel blade. The 6061-T6 aluminum handle is black anodized and outfitted with silver finished hardware, pocket clip, and glass breaker tip.