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5/8"-11 D35mm G1/2 Brazing vacuum drill bit for stone

SANG diamond drill bit used for drilling reinforced concrete, asphalt, brick and air-cured refractories.

Diamond core drill bit for concrete and stone

Diamond Core Drill used for drilling cured concrete, reinforced concrete with steel bars, asphalt, bricks, etc. Diamond Drilling Tools with quality diamond, more durable. High speed Daimond Drill Bits made in China.

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