When drilling into ceramic, porcelain, or natural stone, choosing the right drill bit is just as important as using the proper technique. RUBI has long been a leader in high-performance tile drilling solutions, offering a range of systems designed to maximise speed, durability, and precision.
In this guide, we explore the differences between RUBI’s EASYGRES, DRYGRES, and Premium DRYGRES drill bits—highlighting how they work, when to use them, and how to get the longest possible life from each one.
EASYGRES – Water-Cooled Drilling for Maximum Precision
RUBI’s EASYGRES drill bits are designed for use with water, which is essential for extending their lifespan and maintaining clean, accurate holes. Water reduces friction, prevents overheating, and protects the diamonds along the rim from premature wear.
Key Benefits of EASYGRES:
- Uses water for optimal cooling
- Produces smooth, chip-free holes
- Ideal for ceramics, porcelain, and natural stone
- Best suited for use with a drill rather than an angle grinder
If you want maximum control with cleaner finishes—especially on delicate or polished tiles—the EASYGRES system is the perfect choice.
DRYGRES – Dry Drilling in Two Versions: 4DRILL & Angle Grinder
RUBI’s DRYGRES range is designed for situations where water usage is not practical. DRYGRES comes in two formats:
1. DRYGRES 4DRILL – For Use with a Standard Drill
These bits are built to work at lower RPMs, making them compatible with regular electric drills. They offer great versatility and control, especially for installers who prefer a handheld drill on-site.
2. DRYGRES Angle Grinder Version – Maximum Speed
Thanks to the higher RPM of angle grinders, these drill bits cut significantly faster than the 4DRILL version. Faster cutting means less heat, which leads to:
- Reduced wear on diamonds
- Longer tool life
- Quicker, cleaner drilling
For contractors who drill dozens of holes per day, the angle grinder version is the most efficient option.
How DRYGRES Cool Themselves: Wax-Filled vs. Air Vacuum
One of the standout features of DRYGRES drill bits is their innovative cooling systems, which replace the need for water.
Small Diameters – Wax-Filled Cooling
Smaller DRYGRES drill bits are filled with a special wax. As the drill bit heats up, this wax melts and flows to the cutting edge, lubricating and cooling the diamonds.
Important Tip:
After drilling a hole, always check that the small core of tile has been removed from inside the drill bit.
- If the core stays stuck inside, the wax cannot solidify properly.
- If the wax doesn’t reset, the next hole will generate more heat and wear the diamonds faster.
Keeping the drill bit clear ensures consistent cooling and maximum lifespan.
Larger Diameters – Air Vacuum Cooling
Larger DRYGRES bits use a vacuum of air for cooling instead of wax. The airflow reduces heat build-up and maintains cutting efficiency during prolonged use.
Benefits of air-cooled large bits:
- Effective cooling even during long cuts
- Lower wear on diamonds
- Consistent drilling performance
This makes them ideal for larger holes needed for pipework, fixtures, or accessories.
Premium DRYGRES – Enhanced Diamond Concentration for Superior Performance
For professionals seeking the best performance and longevity, RUBI offers the Premium DRYGRES line.
What makes them superior?
- A higher concentration of diamonds
- Faster cutting speeds
- Reduced heat generation
- Longer lifespan
The increased diamond density allows the bit to stay sharper for longer, making Premium DRYGRES perfect for heavy-duty or high-volume drilling projects.
Final Thoughts
RUBI’s drill bit range is engineered to give installers the right tool for every drilling scenario:
- EASYGRES for water-cooled precision.
- DRYGRES 4DRILL for versatility with handheld drills.
- DRYGRES Angle Grinder for the fastest, coolest dry drilling.
- Premium DRYGRES for the ultimate durability and performance.
Whether you’re drilling a few holes or working on a large installation, understanding how each system works—and how to maintain it—ensures clean, efficient, and long-lasting results every time.
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