Rubi DRYGRES 2-1/4" Diamond Drill Bit - thread 5/8"

DRYGRES diamond drill bits are recommended for the drilling of all types of ceramic tile, especially porcelain stoneware, and other coating materials such as marble and granite. DRYGRES diamond drill bits are dry cutting and can be used directly with a grinder or electric drill without hammer, by using the drill adapter. The drilling depth of DRYGRES drill bits are 36 mm. For a better finish and longer life of the bit, it is important to respect the proper turning speed and perform a slight orbital ovement while drilling.