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Precision drill with exceptional performance. The Rosenthal Burs Twist Drill 2.10mm, ISO #021 Busch®, is crafted from durable tungsten carbide for superior strength and longevity. Ideal for intricate jewelry making, model building, and various crafting projects, this drill bit excels in drilling through a wide range of materials, including metals (gold, silver, brass), plastics, wood, and resin. Experience smooth, accurate drilling with minimal burr formation.