The Microtech 123-4OD Green Ultratech Contoured OTF Tanto Automatic Knife Satin Plain Edge. This Ultratech has a satin tanto blade with a plain edge. The o.d. green Contoured 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.