Durston 1312 Quad Jump Ringer Kerr The belcher chain — also

The belcher chain — also known as a rolo chain

Bur Capacity 114 burs (3/32" shank) Overall Diameter 7" (177

and setting work

Jewelers and engravers rely on them for sharpening carbide and high-speed steel gravers and other precision tools

Made from solid brass

Durston 1312 Quad Jump Ringer Kerr The belcher chain — alsoThe 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.