Durston 1303 Gem Ring Stretcher Mandrels The entire factory relocated from

The entire factory relocated from Germany to Israel in the 1950s

Precision heat dial: 95°F–560°F (35°C–294°C) for delicate shaping to rapid removal

Developed around Mike Dubber's original steel Master Plate

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Wide size range — approximately 5/8" to 2-3/8" (17 mm – 61 mm depressions)

Durston 1303 Gem Ring Stretcher Mandrels The entire factory relocated fromThe Durston 1303 Gem Ring Stretcher is purpose built for enlarging stone set rings without disturbing the setting. By selectively stretching the ring shank opposite the stone, this tool allows jewelers to size up rings that would otherwise be difficult or impossible to resize using traditional methods. To use, select the roller that best matches the profile of the ring shank, place the shank on the center die, and roll back and forth across the bottom