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The GRS engraving block ball vise is the professionals tool for jewelry repair, stone setting, hand engraving, model making, and more. These versatile clamps are very secure yet easily maneuvered leaving two hands free to work. The self-centering jaws have tooling holes that can accept a multitude of attachments or pins. The vice itself rotates in any direction smoothly on the base/socket. GRS engraving blocks are known throughout the world for their precision mechanics and long life that is an outstanding quality and value. Includes upper jaw plates, 4 pins, base, 1 plastic hex key, and wrench.