EXTREME HARD - Made of industrial grade carbon steel with nickel-coated body to resist corrosion.
THICKEN DIAMOND COATING - on the tops offers superior cutting strength for maximum drilling outcomes.
LARGE CLEARANCE HOLE - The glass hole saw set along the drill bit facilitate the entrance of cooling water and escape of chips and other particles from drilling.
WIDE USAGE - Ideal for drilling glass, tile, porcelain tile, ceramic tile, brick, and stone.
NOTE - Please keep adding water when drilling to extend the life. Besides the water lubrication will improve the drilling experience.