The Busch® Round Burs – Fig. 1 – 8.50 mm (ISO #085) deliver exceptional precision, strength, and longevity for demanding jewelry and metalworking tasks. Crafted from premium tungsten vanadium steel, these burs provide durability, edge retention, and reliable performance across a variety of intricate applications such as engraving, stone setting, and metal shaping.

Their precision‑machined cutting teeth produce smooth, accurate cuts with minimal chatter. The round (Fig. 1) shape offers versatility and excellent access to tight areas and curved surfaces. Suitable for both professional jewelers and hobbyists, these burs are ideal for engraving, deburring, drilling, texturing, and shaping metals like gold, silver, platinum, brass, and other non-ferrous materials.

With an approximate length of 1‑3/4" (≈44 mm) and a 3/32" (2.35 mm) shank, these burs are compatible with most standard rotary tools — including flex shafts, micromotors, and Dremels. The design aims to minimize vibration and promote stable operation even during extended use.

To sustain peak performance and prolong tool life, it is recommended to use a high-quality lubricant like Lube‑Stik during operation, which reduces friction and heat buildup. Each set includes 6 precision-crafted burs, manufactured in Germany under stringent quality controls for consistent wear resistance and reliability.