Busch Fig. 77B Cup Burs .90mm-3.10mm-6 Packs

A cup bur sets stones, finishes bearing seats, and cuts clean, uniform cup-shaped recesses in metal. Busch 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 available in 13 sizes ranging from 0.90mm to 3.10mm, giving jewelers the precise control needed for consistent, professional results.

Features

• Classic cup bur profile, ideal for stone setting, seat finishing, and bearing preparation
• Made from tungsten vanadium steel for durability and long cutting life
• Manufactured to ultra-high precision tolerances for consistent, repeatable performance
• Available in 13 sizes from 0.90mm to 3.10mm to cover a wide range of stone sizes
• Sold in multiples of six, with bulk pack pricing for professional use
• European Fig. 411 / USA Fig. 77B designation for universal reference

Available Options

Notes

All sizes in this range (0.90mm–3.10mm) are sold in multiples of six only. Each selection adds one pack of six burs to your order.