The Rubi Tools Foragres Diamond Drill Bits Kit (50903) is perfect for making holes in ceramic tiles during installation and allows professional ceramic tile installers to get the best results in their finishes.

• The diamond rim of FORAGRES drill bits is sintered and joined to the drill bit body by laser welding.
• FORAGRES diamond drill bits must ALWAYS be used water-cooled and with a non-percussive power drill.
• The average life of the FORAGRES diamond drill bits is 60 holes and ALWAYS depends on the type of material， its thickness， and proper cooling and use.
• The drilling depth of the FORAGRES diamond drill bits is 1 1/8" (1 3/8" for diameters of 2 1/4" and 3").
• The maximum speed of use for FORAGRES diamond drill bits is 900 RPM except in diameters of 4" and 4 3/4" where the maximum speed for use is 450 RPM
• For a better finish and longer drill bit life， it is important to respect the proper rotation speed and exert moderate pressure during drilling.