Regardless of shape or size, the Schunk Pronto prism jaws allow different geometries to be clamped fast, flexibly, and safely. The jaw quick-change system is unique in its kind. It can be retrofitted on any lathe chuck (no matter what manufacturer or design). It allows high flexibility and short set-up times of just 15 seconds for a complete set of jaws. The operator can mill the customised required workpiece contour into the soft Schunk Pronto prism jaws himself. Alternatively, configured jaws, based on the workpiece data of the individual prism jaws can be machined and delivered by Schunk on short notice. For raw parts clamping, the prism jaws are additionally equipped with Schunk claw inserts.