The 6 inch, all-metal Thread-O-Stat in Blue has a smooth jaw, so the thread is gripped tightly and securely as you clamp the handles together. Unlike a typical “hemostat” which has a toothed or jagged jaw (preventing a firm grip), the Thread-O-Stat is more like tweezers, only better! It is also quite helpful for removing paper from the back of your paper-piecing projects, or turning things right side out, whatever you need to grab in a tight spot – an all-around handy tool to have in your sewing room!