The Microtech 123-11Ultratech Tri-Grip D/A OTF Tanto Automatic Knife Stonewash Serrated Edge. This Ultratech has a stonewashed tanto blade with a partially serrated edge. Its black anodized 6061-T6 aluminum handle has bead blast finished pocket clip, glass breaker and stainless steel hardware. For those unfamiliar with the Ultratech, it's a fully automatic knife with a double-action out-the-front mechanism, meaning the thumb slide deploys the blade and retracts it as well. The Ultratech knife from Microtech has set the bar for all OTF knives.