The High Speed Steel Burs, Size 24 (5.6 mm) Heart 45° is a heavy-duty, precision-engineered cutting tool crafted for professional jewelers who require maximum control, power, and durability for larger stone settings and advanced metal shaping. Made from premium High Speed Steel (HSS), this bur offers superior hardness, exceptional edge retention, and consistent performance under high-speed operation.
The 45° heart-shaped cutting geometry is specifically designed to produce clean stone seats, deep undercuts, and precise contours essential for secure mounting of medium to large gemstones. With a robust 5.6 mm (Size 24) diameter, this bur provides increased cutting depth, stronger metal removal capability, and enhanced stability—ideal for more extensive jewelry designs, heavy settings, and detailed shaping tasks.
Its spiral-cut flute design improves chip evacuation, minimizes heat buildup, and delivers smooth, accurate cutting with reduced clogging. The standard 3/32″ (2.35 mm) shank ensures universal compatibility with professional flex shafts, micromotors, and jewelry rotary tools.
With its advanced geometry and durable construction, this bur is perfect for bench jewelers, stone setters, engravers, and metalworkers who require a reliable tool capable of producing clean, professional results on demand.
Key Benefits
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Exceptional Durability: High Speed Steel body ensures extended tool life and reliable cutting performance.
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Precision 45° Heart Profile: Designed for accurate stone seat formation, deeper undercuts, and advanced shaping.
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Smooth Cutting Efficiency: Spiral flutes improve chip removal, reduce clogging, and maintain cooler cutting conditions.
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Large 5.6 mm Size: Ideal for larger gemstones, deeper seats, and higher-volume metal removal.
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Standard 3/32″ Shank: Compatible with all major jewelry rotary tools.
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Professional Results: Ensures strong, secure stone placement with clean edges and reduced finishing time.