The High Speed Steel Burs, Size 5 (1.7 mm) Heart 45° is a precision-crafted cutting tool designed for jewelers who demand accuracy, reliability, and effortless control when working with fine metal details. Made from premium High Speed Steel (HSS), this bur offers exceptional cutting strength, outstanding durability, and long-lasting sharpness — even during high-speed continuous use.
The 45° heart-shaped cutting profile is engineered specifically for precision stone setting, allowing jewelers to create clean undercuts, accurate seats, and refined contours for prong, bezel, and flush settings. With a compact 1.7 mm (Size 5) diameter, this bur is ideal for delicate detailing, micro-setting, fine adjustments, and working on small or intricate jewelry components.
Spiral-cut flutes ensure smooth chip evacuation, reduced heat buildup, and minimal clogging, resulting in consistently clean cuts and a high-quality finish. Its 3/32″ (2.35 mm) standard shank fits all major flex shafts, micromotors, and rotary tools, making it an essential addition to any professional jeweler’s tool kit.
Perfect for stone setters, bench jewelers, engravers, and designers, this bur delivers the precision and control required for intricate jewelry work and secure gemstone placement.
Key Benefits
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High Durability: Made from High Speed Steel for premium hardness and long-lasting sharpness.
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Accurate 45° Heart Profile: Ideal for detailed stone setting, undercuts, and fine shaping.
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Smooth Cutting Action: Spiral flutes minimize debris, enhance chip removal, and reduce heat.
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Compact 1.7 mm Size: Size 5 is perfect for micro-settings and working on small, detailed areas.
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Universal 3/32″ Shank: Compatible with all leading rotary jewelry tools.
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Professional-Grade Finish: Produces cleaner cuts with minimal post-finishing required.