Rio Grande Cast-In-One™ Stiffener Ring, 88.9 mm CNC Machines the compounds are highly effective

the compounds are highly effective using small amounts

The ring forming kit allows you to effortlessly form a variety of rings—thick

Made with specially compressed charcoal

securing it in place with the holding bolt inserted through the mandrel and the specially drilled hole in the adapter

Rose gold-filled rings deliver this highly in-demand color of gold and allow you to design with the touch of precious metal customers look for—at a price customers appreciate

Rio Grande Cast-In-One™ Stiffener Ring, 88.9 mm CNC Machines the compounds are highly effectiveDesigned specially for the Rio Grande Cast In One casting machine, this stiffener ring fits onto the upper edge of the 3 1 2" diameter clear plastic investing sleeve to give the sleeve rigidity and to keep the opening perfectly round during investment.