Description:

Drilling diameter: 10mm / 0.39"; drilling depth: 10mm / 0.39"; shank size: 10mm / 0.39". Round shank fits most electric hand drills and bench drills.. Applications: Suitable for drilling concrete, masonry, hard brick, marble, stone, and other hard materials.. Dry or Wet Drilling: Can be dry or wet drilling. To prolong the using life, it is recommended to be used with water for cooling and lubrication.. Large Clearance Hole: Facilitates the entrance of cooling water and the escape of chips and other particles from drilling.. Sharp Cutting Edge: The core drill bits cut clean and fast holes, and make drilling process much easier..