25mm Mushroom Head Diamond Burs 120 Grit – 5pcs Set for Stone & Glass Carving

The 25mm Mushroom Head Diamond Bur (120 Grit, 5-Piece Set) is an industrial-grade rotary carving tool engineered for deep contouring, hollow shaping, and surface smoothing on hard materials including gemstones, jade, glass, ceramics, and stone. Featuring high-concentration electroplated diamond abrasive bonded to a rigid 6mm steel shank, this bur delivers aggressive material removal with consistent rotational balance.

Key Features

• Mushroom Profile Geometry: Specially contoured convex head designed for smoothing concave surfaces, hollowing bowls, rounding edges, and intricate gemstone sculpting.
• 120 Grit Electroplated Diamond: High-density diamond coating provides rapid material removal while preparing surfaces for finer polishing stages.
• Heavy-Duty 6mm Shank: Precision-machined 6mm shank minimizes vibration and fits standard rotary tools, die grinders, and flexible shaft machines.
• Consistent Performance: Uniform abrasive distribution ensures smooth cutting without chipping or excessive heat buildup.

Applications

• Lapidary & Gemology: Rough shaping and carving of cabochons, jade, agate, quartz, and petrified wood.
• Glass Art & Sculpting: Edge profiling, grooving, and hollowing on art glass, bottles, and stained glass.
• Ceramic & Tile Detailing: Beveling, hole expansion, and contouring on porcelain, tile, and dense ceramics.
• Stone & Mineral Crafting: Sculpting granite, marble, fossils, and mineral specimens.

Specifications & Operating Tips

• Head Diameter: 25mm
• Grit Rating: 120 Grit
• Shank Diameter: 6mm
• Quantity: 5 pieces per pack
• Recommended Use: Always use water coolant or lubricant during operation to prevent overheating and maximize diamond longevity. Maintain light to moderate pressure at recommended operating speeds.