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Foundation Drill Tools Construction Pile Rig Tungsten Carbide Flat Bits Casing Teeth for Drill Casing or Core Barrels, Find Details and Price about Core Drill Bit Casing Shoe Bit from Foundation Drill Tools Construction Pile Rig Tungsten Carbide Flat Bits Casing Teeth for Drill Casing or Core Barrels - Yanggu Jixing Drilling Tools Co., Ltd.