1.8mm Hollow Cup Diamond Bur, 100pcs – 80 Grit Precision Carving Tool for Gemstone, Stone & Glass

1.8mm Hollow Cup Diamond Burs (100-Piece Bulk Pack, 80 Grit) are precision hollowing, round-rounding, and concave carving tools engineered for lapidary artists, jewelers, and glass carvers. Featuring a hollow cup concaved profile coated with high-grade 80 grit electroplated diamond on a standard 2.35mm (3/32") shank, these burs are perfect for shaping rounded cabochon tips, eyelet hollows, stone detailing, and glass etching.

• Head Size: 1.8mm hollow cup
• Grit: 80 Grit for fast, aggressive material removal
• Shank Diameter: 2.35mm (3/32") standard rotary tool fit
• Quantity: 100 pieces per bulk pack
• Bond & Abrasive: Premium electroplated diamond coating
• Applications: Gemstone hollowing, bead eyelet shaping, concave carving, stone detailing, and glass engraving

Always use water or coolant during operation to prolong tool longevity and maintain clean cutting performance.