SILVER Diamond Crown for Porcelain Stoneware 68 mm / Stone - Vacuum Brazed Diamond Core Drill Bit, M14 Thread, Wet Drilling

Precision meets durability in this 68 mm diamond core drill bit, engineered specifically for hard, brittle materials like porcelain stoneware, granite, and marble. Unlike standard tile bits that wander or crack the surface, the vacuum brazed diamond rim bites cleanly from the first rotation, delivering a smooth, chip-free hole every time. The continuous cutting edge and side ejection slots keep the core cool and clear, making it the go-to choice for professional tilers and stone masons who demand repeatable accuracy.

Highlights

• Vacuum brazed diamond segments for exceptional wear resistance and long service life
• 68 mm drilling diameter with M14 thread for direct mounting on angle grinders
• Continuous diamond rim ensures clean, precise cuts with minimal chipping
• Side slots allow easy removal of the drilled core, reducing downtime
• Optimized for wet drilling, but can be used dry for short intervals
• High-grade steel body provides stability and reduces vibration

In daily use

Mount the bit on your angle grinder with an M14 spindle, set the tool to the recommended speed, and apply a steady water flow to the cutting area. The water cools the diamond rim, prevents thermal damage to the material, and extends the bit's lifespan. Whether you're cutting holes for plumbing, electrical outlets, or anchor points, the bit maintains a true circle without wandering, even on polished surfaces. The 35 mm working length is sufficient for most tile and slab thicknesses, while the 10–15 mm diamond segment height provides ample cutting depth before resharpening is needed.

Full specifications

• Drill bit type: Diamond core drill bit / hole saw
• Drilling diameter: 68 mm
• Mounting thread: M14
• Material compatibility: Porcelain, stoneware, ceramic tiles, granite, marble, hard natural stone
• Recommended drilling method: Wet drilling
• Compatible tools: Angle grinder with M14 spindle
• Diamond technology: Vacuum brazed diamond segments
• Body material: High-grade steel
• Diamond segment height: Approx. 10–15 mm
• Working length: Approx. 35 mm
• Cooling requirement: Water cooling essential for optimal performance
• Durability: Professional grade, high wear resistance
• Cutting edge type: Continuous diamond rim
• Core ejection: Side slots for easy core removal
• Usage environment: Wet (recommended) or dry
• Max RPM: Varies by material and tool; consult tool manual

Final note

For installers who refuse to compromise on hole quality, this diamond crown delivers consistent results on the toughest materials. Keep it wet, keep it steady, and it will outlast conventional bits by a wide margin.