Durston 1312 Quad Jump Ringer Ring Sizers & Stretchers The included lenses function as

The included lenses function as polarizing elements and light diffusers

Center slot produces cuts with perfectly parallel walls

5 mm Faceted Round 2 Topaz White

LX is the recommended motor for this application

smaller version (STH-1) and a heavier

Durston 1312 Quad Jump Ringer Ring Sizers & Stretchers The included lenses function asThe Durston 1312 Quad Jump Ringer is a professional jump ring making machine designed for jewelers and metalsmiths who need to mass produce jump rings efficiently. Compatible with a Foredom No. 30 style handpiece and flex shaft machine, this system lets you produce jump rings from soft, non ferrous jewelry wire including gold, copper, and silver. Wire as thick as 13 gauge (1. 85 mm) can be used, and the inside diameter of finished rings ranges from 2.