RUBI DRYGRES PREMIUM KIT 4 Diamond Core Bit Set (Ref. 51931)

Diamond core bits from the RUBI DRYGRES PREMIUM series are designed for drilling holes in hard ceramic tiles and are also suitable for drilling into natural stone (e.g., granite, marble). They are designed for dry drilling using an angle grinder or a drill with the included adapter. Thanks to vacuum welding during production and the use of high-quality materials with a high diamond density, their advantages are high drilling speed and extra-long durability.

The core bits feature side holes designed for cooling during drilling, which helps maintain a lower temperature and extends the core bit’s lifespan. The bits with diameters of 43 mm and 68 mm have segmented diamond segments, enhancing drilling precision.

When drilling, it is necessary to apply appropriate pressure to the core bit, because excessive pressure can cause it to overheat and thus be damaged.

Improvements of the DRYGRES PREMIUM series compared to the DRYGRES series:

Faster drilling
More than twice the lifespan
Improved cooling with side holes (Ø 20-85 mm)
Core bit with segmented interruptions (Ø 43-85 mm)