Used for drilling soft brick, soft masonry, concrete block, rebar concrete, ceramic tiles, marble, engineering stone, vitrified tiles, etc.. 25mm Diamond Core Drill Style Bit. Cut perfect circles. Can be used on an electric hand drill or another machine, such as an angle grinder, hex, or round plus shank.. Made of diamond with precision drilling speed and long life use.. Wet or Dry use.To prolong its using life, must be used with water for cooling and lubrication.. Small incision resistance,feature drilling stably, fast speed, not breaking the border. Facilitates the entrance of cooling water and the escape of chips and other particles from drilling to aid in faster cutting and coring..
