PROXXON Diamond Ball Grinding Bits for Glass & Stone - Pack of 2
PROXXON diamond ball grinding bits designed specifically for drilling and machining glass and stone, including granite. Available in 1.2mm, 2.2mm, and 3.2mm ball head sizes, all with a 2.35mm shaft. Recommended for use on a drill press at approximately 2,000 rpm with the addition of coolant for best results and maximum bit life. Sold as a pack of 2.
Key Features
- Ball Head Profile: Optimised for drilling and machining curved holes and profiles in glass and natural stone.
- Glass & Stone Specialist: Designed for glass and stone up to granite hardness — a different application to standard engraving bits.
- 3 Head Sizes Available: 1.2mm (SKU 28230), 2.2mm (SKU 28232), 3.2mm (SKU 28234).
- Use with Coolant at 2,000 rpm: Recommended for drill press use with coolant to extend bit life and improve cut quality.
- 2.35mm Shaft: Fits standard rotary tool and drill press chucks.
- Pack of 2: Two identical bits per pack.
Specifications
- Head type: Ball
- Head sizes: 1.2 mm (SKU 28230), 2.2 mm (SKU 28232), 3.2 mm (SKU 28234)
- Shaft diameter: 2.35 mm
- Recommended speed: ~2,000 rpm
- Recommended use: Drill press with coolant
- Application: Glass, stone, granite
- Pack quantity: 2



