This Engraving Block is specifically designed for handwork including engraving, jewelry making, wood carving, precision assembly and more. This flexible workholder is very stable yet easily maneuvered while you work. Self-centering jaws have tooling holes that accept a variety of pins and attachments. The top half of the vise rotates smoothly about its center. The spherical bottom sits in a socket ring so you can tilt it in any direction. This block also includes a 30 piece attachment set. Included in this set are leather-faced ring clamps, plus a variety of pins and other clamps that fir the upper jaw plates of every GRS Block. These 30 pieces help you instantly solve the problems of holding, so you can start working.