The High Speed Steel Burs, Size 17 (4.3 mm) Heart 45° is a professional-grade cutting tool designed for jewelers who require precision, durability, and reliable performance in stone setting and metal shaping. Crafted from high-quality High Speed Steel (HSS), this bur provides long-lasting sharpness, superior hardness, and consistent cutting performance even at high speeds.

Its 45° heart-shaped profile is ideal for creating precise stone seats, controlled undercuts, and smooth contours for prong, bezel, and flush settings. The 4.3 mm (Size 17) diameter delivers deeper cuts and faster material removal, making it perfect for larger stone settings, shaping substantial designs, or forming secure, professional-grade seats without sacrificing control.

Spiral-cut flutes optimize debris removal, reduce heat buildup, and provide cleaner, smoother cuts. The tool features a standard 3/32″ (2.35 mm) shank, making it compatible with all major flex shafts, micromotors, and rotary jewelry tools.

Designed for stone setters, engravers, and bench jewelers, this heart bur ensures precise shaping, secure stone seating, and professional-quality finishing for both soft and hard metals.

Key Benefits

• Exceptional Durability: High Speed Steel construction ensures long-lasting sharpness and heat resistance.

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

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

• Optimal 4.3 mm Size: Size 17 offers deeper cuts and faster shaping for larger stones and designs.

• Standard 3/32″ Shank: Compatible with all professional jewelry rotary systems.

• Professional Results: Clean contours, secure stone settings, and reduced finishing time.