Handles through led silk Rod led clamp body of movement, has two a increased force institutions, a for handles of increased force, a trapezoidal thread drive of increased force, increased force than very big, so jaw of clip tight force is very big of, can reliable of fixed live artifacts, thus guarantee in fitter work Shi role in artifacts Shang big of forces Shi artifacts does not occurred any mobile. But also the clamping force is too large may pinch the workpiece surface, so the clamp needs to protect the surface from being damaged when the workpiece between the vise jaws and soft stuff than the workpiece on the mat to protect artifacts, such as paper or soft metal.