Diamond Drill Easy Gres Wet Fiber 55mm

electroplated diamond drill bits for use with an electric drill without impact.the quality of the diamond coating allows for drilling holes in stoneware porcelain stoneware granite marble and glass.always use with water cooling.to prevent the drill from moving and achieve even hole edges it is recommended to use the multidrill guide (ref. 50944)and for proper cooling of the tool during operation a container of water (ref. 50947).the recommended operating speed of the drill is 400 to 1000 rpm depending on the type of material being drilled.average drill life is approx. 10-20 holes depending on the type of material.the drill body is made of steel with a electroplated diamond cutting rim. side hole allows for improved cooling and debris removal after each hole is drilled. to ensure good hole finish and drill bit life do not exceed the specified rpms or apply excessive pressure to the drill bit during operation. packed in plastic containers suitable for storing used drill bits.