(CC BY-NC 4.0)
This ring stretcher will enlarge rings from sizes 3 (14.1 mm diameter) and up. It comes with 17 different dies to fit flat, half-round, and knife-edge shank profiles of widths from 1 mm to 4 mm. This device has 35 mm (0.188") holes in the base so it can be mounted to a bench or work table with wood screws (not included). Overall measurements of tool: 19 cm x 8.5 cm x 10 cm (7.4" x 3.3" x 3.9"). Use caution when stretching rings with set stones, or stretching rings more than 1 size from original size. This deluxe ring stretcher includes 17 individual dies (that accommodate most ring styles). Easily enlarge any stone-set ring! This device simply works by rolling out the shank to stretch the metal. It will then stretch the ring but avoids loosening any prongs or stone settings. To stretch rings, select and position the correct die. Place your ring on the shaft, and tighten the handle. Carefully rotate the handle 360 degrees, or until your ring is the desired size.
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