8.0mm Hollow Cup Diamond Bur, 100pcs – 3mm Shank 80 Grit for Stone, Concrete & Glass

8.0mm Hollow Cup Diamond Burs (100-Piece Bulk Pack, 80 Grit, 3mm Shank) are heavy-duty concave carving, hollowing, and surface removal tools engineered for stone sculpting, concrete detailing, glass etching, and lapidary work. Featuring an aggressive 80 grit electroplated diamond coating on a rigid 3mm shank, these burs provide excellent stability and fast cutting performance.

• Head Size: 8.0mm hollow cup
• Grit: 80 Grit coarse for rapid material removal
• Shank Diameter: 3.0mm heavy-duty rotary shank
• Quantity: 100 pieces per bulk pack
• Bond & Abrasive: Premium electroplated diamond coating
• Applications: Stone sculpting, concrete surface removal, glass carving, cavity hollowing, and bead rounding

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