Diamond Drill Easy Gres Wet Fiber 8mm

electrolytically coated diamond drill bits for use with an electric drill without impact.the quality of the diamond allows for drilling holes in stoneware porcelain stoneware granite marble and glass.ideal for finishing bathrooms and adding decorative elements to any ceramic surface.always use with the easy gres guide which allows for proper guidance and cooling guaranteeing accuracy and a good finish.average life of up to 15 holes depending on the material being drilled.steel body electrolytically coated diamond tip.a hole in the side surface of the drill bit allows for better cooling and removal of drilling debris.recommended operating speed: 400-1000 rpm. Depending on the material.do not exceed the recommended speed and do not apply excessive pressure when drillingwhich will allow you to obtain the best drilling results and extend the life of the drill bit.