Brass Practice Rings-Pack of 5 Sharpening Stones the Jura by GRS 3X

the Jura by GRS 3X Block

A diamond stone or compatible diamond wheel is recommended for the final polish before use

Includes 3 standard-length QC tool holders

Durston part number 1101

The abrasive cuts with a crisp

Brass Practice Rings-Pack of 5 Sharpening Stones the Jura by GRS 3XThese brass practice rings are designed for jewelers, engravers, and stonesetting students who need a consistent, affordable substrate for skill building. Each ring features a slightly domed profile, making them well suited for practicing hand engraving, layout techniques, and stonesetting methods on a realistic curved surface. Sold in a pack of 5, they provide ample material for repeated practice sessions without using your fine metal stock. Features