The RUBI DRYGRES Diamond Drill Bit 25mm (Ref. 57903) is a premium tool designed for the dry drilling of hard materials such as porcelain tiles, glazed ceramics, natural stone, marble, and granite. Utilizing advanced Vacuum Brazed technology, the diamond particles are securely fixed to the cutting zone, significantly increasing resistance to friction and high temperatures. This 25mm diameter bit is specifically engineered for creating precise holes for water points, drains, and electrical connections.
Featuring a standard M14 thread, this drill bit connects directly to any angle grinder. It can also be used with a non-impact electric drill by using the RUBI adapter (Ref. 05976). The design includes large lateral openings that improve air cooling and facilitate the quick ejection of solid debris after each drilling.
With a drilling depth of 36 mm and a maximum operating speed of 14,000 RPM, this bit offers high performance and speed. For this diameter range (20-75mm), the average lifespan is approximately 60 holes, depending on the material and proper usage. To maximize lifespan and finish quality, it is recommended to apply a slight orbital movement during drilling.
