Hitachi's revolutionary line of diamond grit drill bits are ideal for the professional and/or serious DIYer who drills into hard materials like tile, marble, porcelain, granite, slate and glass. They significantly outperform the standard carbide glass and tile bits on the market today, both in speed of drilling and the number of holes that can be drilled per bit. These diamond grit drill bits are easy to use, only water is needed and they can be used with any cordless drill for flexibility and convenience.

• 1/4-inch Diamond Core bit with water feed
• Drill through porcelain, marble, slate, and glass
• Water feed needed to help keep the material and the bits cool during drilling
• Drill up to 30-35 holes per bit depending on the material
• Can be used with any cordless drill for flexibility and convenience

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