RUBI DRYGRES PREMIUM Diamond Drill Bit – 28mm (06972)
The RUBI DRYGRES PREMIUM 28mm Diamond Drill Bit is a professional-grade dry drilling bit designed for fast, accurate drilling through porcelain, ceramic, granite, marble and natural stone. Featuring advanced vacuum-brazed diamond technology for excellent durability and cutting performance, it incorporates cooling wax to minimise heat and friction. Ideal for drilling holes in tiles when installing bathroom accessories, fixtures and fittings.
Key Features:
- 28mm drilling diameter
- Suitable for porcelain, ceramic and natural stone
- Vacuum-brazed diamond technology for durability
- Integrated cooling wax to reduce overheating
- Dry drilling – no water required
- M14 threaded connection for angle grinders
- Compatible with electric drills using a suitable adaptor
- Maximum drilling depth: 30mm
- Maximum operating speed: 14,000 RPM
- Average lifespan: approximately 150 holes, depending on material and usage

when you spend over £100. 



