Montana Brand diamond tile drill bits provide outstanding performance in ceramic, porcelain, granite, slate, marble, glass and most all hard surface materials. Drill holes for water supply lines, drains, electrical/wiring, towel bars and fixture installations. • 15X Longer life versus carbide tip spade drill bits • 10X Faster drilling than standard glass and tile drill bits • Patented diamond sintered tip for easy start • Compatible with all corded and cordless drills • Large core ejection slot for easy material and plug removal • Reverse thread spiral for continuous water feed
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