Professional enlarger size tool: The Ring Expander Tool specially designed for ring stretcher or reducer. It can be used according to your needs. Free stretch: Unscrew the fixed button under the black, you can stretch freely. with Ring Sizer Measure, Accurate measurement of fingers. Alloy steel blade: The cutter head is made of special tool steel CNC processing, with precise biting and finer stripping. Humanized handle: comfortable to hold, non-slip and durable, combined with connecting rods, faster peeling and more labor-saving. Service: If you have any questions, please feel to contact us and we will reply within 24 hours!