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This Montolit Diamond Core Bit is made in Italy with high quality diamond construction ensuring the Bit will quickly dry drill many holes (40 - 60) in the hardest porcelain, ceramic and natural stone (granite, marble, slate and limestone) tile. Bit is designed to mount to a standard angle grinder 5/8" / 11 standard thread without the use of an adapter (recommended 11,000 rpm). Average drill time of 20 seconds per hole! See the product video for operating instructions and usage tips.
