Expand the capabilities of your jewelry workstation with the GRS® BenchMate® Inside Ring Collet Set — a premium solution for securely holding rings from the inside without interference.

This set includes seven durable expanding collets, an expansion cone, two screws (1 long, 1 short), and a hex (Allen) wrench, allowing professional jewelers to work with both delicate and wide bands using unmatched precision and stability. Whether you're engraving, stone setting, filing, or polishing, this set ensures the ring is gripped securely without marring or slipping.

The collets are compatible with all GRS Inside Ring Holders, including:

• Horizontal Inside Ring Holder (#004-679)

• Vertical Inside Ring Holder (#004-847)

• Inside Ring Mandrel (#004-589)

Each collet expands from the inside, evenly distributing pressure and reducing vibration while maintaining complete control. For thinner bands, a single collet is ideal. For larger or multiple rings, stack collets and use the long expansion screw for extended grip capacity.

Designed for professionals, this tool eliminates the need for traditional external ring clamps, providing a clear work surface and enhanced access to all areas of the ring. It’s especially useful in high-precision tasks like custom engravings and gemstone setting where every detail matters.

Key Benefits:

• Holds rings from the inside for full 360° access

• Prevents ring damage or distortion during work

• Adjustable with 7 expanding collets for multiple sizes

• Ideal for single and stacked ring use

• Made in the USA for premium quality assurance

Whether you're resizing, engraving, or setting stones, this collet set is a critical upgrade for any professional bench setup using the GRS® BenchMate® system.