RUBI DRYGRES PREMIUM Diamond Core Bit 12 mm (Ref. 06929)

The RUBI DRYGRES PREMIUM 12 mm diamond core bit is designed for drilling holes in hard ceramic tiles and is also suitable for drilling natural stone (e.g., granite, marble). It is designed for dry drilling using an angle grinder or a drill with an adapter. Thanks to vacuum welding during manufacturing and the use of high-quality materials with a high density of diamonds, its advantages are high drilling speed and extra long lifespan. The core bit diameter is 12 mm.

In the center of the core bit, there is a cavity filled with wax. During drilling, the wax melts due to rising temperature, providing lubrication and cooling for the drill bit. When the wax runs out, it is recommended to replenish it—simply using a candle. 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)