Provided is a jaw tool formed from two separable units and which includes a fastening device that attaches the two units together when the jaw tool is in use and which may automatically separate the units after the device performs its function such as clamping and/or cutting. Also provided is a jaw tool having a cutting blade wherein the contours of the device are shaped so that force is concentrated on the cutting bade when the device is closed. The jaw tool may be manufactured from a single injection molded-component that is used in duplicate to form the jaw tool. The jaw tool may be used in various applications in which it may be beneficial to simultaneously clamp and cut an object, such as various medical applications including vascular, gastrointestinal, respiratory, and placental.