The High Speed Steel Burs, Size 9 (2.5 mm) Heart 45° is a precision-engineered tool designed for professional jewelers who require accuracy, consistency, and reliability in detailed stone-setting applications. Crafted from premium High Speed Steel (HSS), this bur offers exceptional durability, long-lasting sharpness, and consistent cutting performance even at high rotation speeds.
The 45° heart-shaped cutting profile provides precise control for creating stone seats, undercuts, and fine contours essential for prong, bezel, and flush settings. The 2.5 mm (Size 9) diameter is ideal for small-to-medium stone settings, offering excellent precision for delicate detailing while still removing material efficiently.
Its spiral-cut flutes ensure smooth chip evacuation, reduced friction, and cooler operation, improving both tool life and cutting quality. The bur is built with a 3/32″ (2.35 mm) standard shank, ensuring compatibility with all common flex shafts, micromotors, and rotary jewelry systems used by professional stone setters and bench jewelers.
Engineered for precision and performance, this heart bur is a must-have for jewelers performing detailed shaping, clean seat preparation, and accurate metal contouring in both soft and hard metals.
Key Benefits
-
Premium Durability: HSS construction provides superior hardness and long-lasting edge sharpness.
-
Accurate 45° Heart Design: Enables clean stone seats, flawless undercuts, and precise shaping.
-
Smooth Performance: Spiral flutes reduce clogging and deliver clean, controlled cutting.
-
Ideal 2.5 mm Size: Size 9 is perfect for small to medium stone settings and fine detail work.
-
Universal Fit: Standard 3/32″ shank fits all major jeweler’s rotary tools.
-
Professional Results: Ensures secure stone placement and minimal finishing time.