The High Speed Steel Burs, Size 7 (2.1 mm) Heart 45° is a precision-engineered cutting tool designed for professional jewelers who require accuracy, clean results, and long-lasting performance in stone setting and fine detail work. Constructed from premium High Speed Steel (HSS), this bur provides exceptional hardness, outstanding edge retention, and consistent cutting accuracy even under extended use.

Featuring a 45° heart-shaped cutting profile, this bur is ideal for creating precise stone seats, undercuts, and detailed finishing required in prong settings, bezel shaping, and flush-setting preparation. The 2.1 mm (Size 7) diameter makes it perfect for small to medium stone settings, offering excellent control for intricate designs and fine detailing work.

Spiral-cut flutes enhance chip removal, reduce heat buildup, and ensure smooth, controlled cutting performance. The bur includes the industry-standard 3/32″ (2.35 mm) shank, making it fully compatible with all professional flex shafts, micromotors, and rotary tools used in jewelry workshops.

This high-quality heart bur is ideal for stone setters, engravers, and professional jewelers seeking precise shaping, clean cutting, and reliable tool life.

Key Benefits

• Durable HSS Construction: High Speed Steel ensures superior hardness, heat resistance, and long-lasting sharpness.

• Accurate 45° Heart Geometry: Perfect for forming stone seats, undercuts, and fine jewelry detailing.

• Smooth & Efficient Cutting: Spiral-cut flutes reduce clogging, improve chip removal, and maintain cooler operation.

• 2.1 mm Precision Size: Ideal for smaller stones, detailed shaping, and delicate metalwork.

• Universal 3/32″ Shank: Compatible with most professional jewelry rotary systems.

• High-Quality Finishing: Ensures clean, accurate contours with reduced finishing work.