Our Montana Brand Diamond Pro drill bits and carbide hole saws will give you outstanding performance in most hard surface materials. Use these bits on ceramic, porcelain, granite, slate, marble, glass, and other hard surface materials. Useful in ecorative crafts as well. Drill 10 times faster than standard glass and tile drills and get 40+ holes per bit before a replacement is needed. Engineered to specific standards for a long life and durability. The unique cutting edge design drills clean round holes while improving irrigation and material evacuation. Great in cordless drills.
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