Durston Gem Ring Stretcher

Built with Durston’s award-winning design and engineering expertise, this high-quality ring stretcher is specially built to enlarge any stone-set ring without loosening prongs or stressing settings. The 17-piece roller set (included) accommodates most ring styles 4-3/4 (U. S.) or larger. Includes an organizer case to keep everything together and easily accessible. Made from cast-iron and powder-coated for a long service life, this tool can be permanently attached to your bench using the pre-drilled 6.2mm base holes; recommended bolt size is 6mm.