The High Speed Steel Burs, Size 14 (3.5 mm) Heart 45° is a premium tool engineered for professional jewelers who demand precision, durability, and consistent performance in stone setting and metal shaping. Made from top-grade High Speed Steel (HSS), this bur provides superior hardness, long-lasting sharpness, and reliable cutting even under high-speed operation.

Featuring a 45° heart-shaped profile, it is ideal for creating precise stone seats, smooth undercuts, and detailed contours for prong, bezel, and flush settings. The 3.5 mm (Size 14) diameter allows for deeper cuts and faster shaping while maintaining excellent control for medium-to-large designs.

Its spiral-cut flutes reduce clogging, prevent overheating, and ensure smooth chip removal, providing a cleaner finish and improved workflow. The 3/32" (2.35 mm) standard shank guarantees compatibility with most flex shafts, micromotors, and rotary jewelry tools, making it a versatile addition to any jeweler’s toolkit.

This professional-grade heart bur is perfect for stone setters, engravers, and bench jewelers seeking precision, strength, and flawless finishing results.

Key Benefits

• High Durability: Crafted from High Speed Steel for extended tool life and superior heat resistance.

• Precision 45° Heart Profile: Enables accurate shaping for stone seats, undercuts, and intricate metal details.

• Smooth Cutting Performance: Spiral flutes reduce clogging, remove debris efficiently, and maintain cooler operation.

• Optimal 3.5 mm Size: Size 14 allows deeper cuts and faster shaping for medium-to-large stone settings.

• Standard 3/32" Shank: Compatible with all major jewelry rotary tools.

• Professional Results: Produces clean contours, accurate stone seats, and minimizes finishing time.