Busch Fig. 77B Cup Burs .90mm-3.10mm-6 Packs Tumblers & Media Durston rolling mills are renowned

Durston rolling mills are renowned for holding their value better than virtually any other tool in the jeweler's studio

Durston 1312 Quad Jump Ringer

precise focusing over 55mm of travel

with or without handles

Steel collet securely holds fine wire

Busch Fig. 77B Cup Burs .90mm-3.10mm-6 Packs Tumblers & Media Durston rolling mills are renownedBusch cup burs are among the most trusted tools in professional jewelry making engineered to ultra high precision tolerances and favored by bench jewelers worldwide. The Busch Fig. 77B (European Fig. 411) cup bur is designed for setting stones, finishing bearing seats, and creating clean, uniform cup shaped recesses in metal. Available in 13 sizes ranging from 0. 90mm to 3. 10mm, these burs give jewelers the precise control needed for consistent,