The High Speed Steel Ball Burs Size 20 (5mm) Round is a professional-grade cutting tool designed for jewelers who require powerful metal removal, controlled shaping, and long-lasting precision. Crafted from high-speed steel (HSS), this bur provides exceptional cutting strength, durability, and consistent performance during demanding jewelry fabrication and finishing tasks.
The 5mm round head delivers smooth, controlled shaping ideal for creating larger cavities, sculpting curved surfaces, refining stone seats, hollowing out metal, and performing advanced jewelry design work. Its larger diameter makes it ideal for broad material removal while maintaining clean, accurate cutting edges. This size is especially useful for wax carving, bezel interior shaping, smoothing larger recesses, and forming rounded contours in gold, silver, platinum, and other jewelry alloys.
Designed with precision spiral-cut flutes, this HSS ball bur ensures efficient chip removal, reduced friction, and stable cutting performance even at high rotational speeds. The standard 3/32" (2.35mm) shank guarantees compatibility with all professional rotary handpieces, flex shafts, and micromotors used in modern jewelry workshops.
Its premium HSS construction maintains sharpness far longer than standard burs, providing improved tool life, consistent results, and reduced downtime. Whether used for heavy shaping or refined smoothing, this bur offers exceptional balance, stability, and cutting efficiency across a wide range of jewelry applications.
The High Speed Steel Ball Burs Size 20 (5mm) Round is a must-have tool for professional jewelers seeking clean broad cuts, smooth finishing, and durable performance.
Key Benefits
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Large 5mm round head for efficient shaping and cavity formation
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High-speed steel construction ensures long-term durability
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Smooth, stable cutting performance for professional results
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Ideal for broad metal removal and curved surface detailing
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Reliable tool for daily professional bench use