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JSP® Ring Stretcher / Reducer
The JSP® Ring Stretcher / Reducer is a professional, bench-mounted tool engineered for precise and repeatable ring resizing operations. Designed for jewelry manufacturing, repair, and service environments, this unit allows for both ring enlargement and reduction with controlled force and minimal risk of distortion.
The hardened, tapered mandrel is precision-marked with U.S. ring sizes 1 through 15 and features six longitudinal splines to ensure uniform expansion. A two-sided steel reduction plate with sixteen formed depressions provides multiple sizing options for accurate and consistent ring downsizing.
The heavy-duty base includes four pre-drilled mounting holes, allowing permanent installation on a workbench or table for maximum operational stability.
Technical Specifications & Features
Dual-function tool for ring stretching and reducing
Tapered mandrel with six splines for even expansion
Clearly engraved U.S. ring sizes 1–15
Two-sided reduction plate with 16 reduction cavities
Bench-mountable base with four mounting holes
Overall height: 16 in (406 mm)
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