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

the Jura by GRS 3X Block

for permanent resizing

Durston part number 1101

consistent wear reduces risk of catastrophic tool failure

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