This economy ring stretcher and reducer resizes ring shanks from size 1-15 (US sizes). The highly polished 4-spline mandrel is graduated in 1/4 sizes for smoothly and accurately enlarging rings. The reversible base plate has 16 reduction dies which can reduce ring shanks up to 12 mm wide by compression. The entire tool is made out of hardened steel with a teal painted base. This compact model measures 15.5 x 4.5 x 7.5" (39.5 x 11.5 x 19.0 cm). THIS IS INTENDED FOR PRECIOUS METALS ONLY, NOT FOR USE WITH COIN RINGS OR STRONGER METALS SUCH AS STEEL OR TITANIUM. Made in India.