Durston 2126 Medium Ring Stretcher Mandrel

This medium expanding ring stretcher mandrel makes it easy to enlarge and size rings in the mid-range of sizes, in a compact format that tucks neatly into a drawer or tool roll. Once clamped, the mandrel expands smoothly as you tighten the center bolt, easing the shank out in small, controlled steps.

Features

• Medium expanding ring stretcher mandrel sized for everyday ring work.
• Compact design stores easily and is well suited to travel or small bench setups.
• Can be secured in a vice, clamp, or used with a suitable lathe/polisher for powered stretching.
• Center bolt expansion tightened with the included hex key for even, controlled enlargement.
• Supports both gentle size adjustments and truing slightly out-of-round rings.
• Pairs naturally with other ring sizing tools to build a flexible sizing workflow.

Specifications

What's Included

Compatibility

Secure the mandrel firmly in a bench vice, clamp, or appropriate lathe/polisher fixture before use. Suitable for enlarging plain bands and many fabricated rings; use extra care with stone-set or solder-heavy designs.

Notes

Place the ring over the mandrel, then tighten the center bolt gradually with the hex key to stretch the ring. Work in small increments and check the size frequently to avoid over-stretching, especially on soldered or stone-set rings.

California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.