Rubi EASYGRES Wet Drill Bits Features Diamond drill bits are to be used with an electric drill without a hammer The quality of the diamond allows the drilling of ceramics, porcelain, granite, marble and glass Always use water-cooled Fits standard size 1/2" and 3/8" chuck drills It is ideal for installing bathroom accessories and any type of decorative accessories over ceramic surfaces Average life between 5 and 10 holes, depending on the material The drilling depth is 1 inch The body is made of steel, and the bit is made of electro-deposited diamond Lateral opening to improve cooling of the drill bit and to allow the elimination of solid waste produced after the drilling of the hole The recommended speed of use is between 400 and 1000 RPM, depending on the material to be drilled To achieve a better finish and a longer life of the drill bit, it's important to observe the adequate speed of use and to apply moderate pressure during the drilling
