The High Speed Steel Burs, Size 19 (4.7 mm) Heart 45° is a premium-grade rotary tool designed for jewelers seeking precision, durability, and consistent performance in stone setting and metal shaping. Constructed from high-quality High Speed Steel (HSS), this bur offers exceptional hardness, long-lasting sharpness, and reliable cutting even during extended high-speed operations.

The 45° heart-shaped cutting profile is ideal for creating smooth stone seats, controlled undercuts, and precise contours necessary for prong, bezel, or flush settings. With a 4.7 mm (Size 19) diameter, this bur provides increased cutting depth and material removal capability, making it perfect for larger gemstones or medium-to-large metal shaping without sacrificing control.

Spiral-cut flutes enhance debris removal, reduce heat buildup, and ensure smooth, efficient cutting. The standard 3/32" (2.35 mm) shank guarantees compatibility with most flex shafts, micromotors, and rotary tools used in professional jewelry workshops.

This professional-grade heart bur is essential for stone setters, engravers, and bench jewelers who demand high precision, clean finishing, and consistent results.

Key Benefits

• High Durability: Crafted from premium High Speed Steel for long-lasting sharpness and heat resistance.

• Precise 45° Heart Profile: Ensures accurate stone seats, undercuts, and detailed metal shaping.

• Smooth, Efficient Cutting: Spiral flutes minimize clogging, remove debris, and reduce heat buildup.

• Optimal 4.7 mm Size: Size 19 offers deep cuts and high material removal efficiency for larger workpieces.

• Standard 3/32″ Shank: Fits all major jewelry rotary systems and flex shafts.

• Professional-Level Results: Achieves clean contours, secure stone settings, and reduced finishing time.