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Mining Rock Drill Bits Mining Mining Drilling Tungsten Carbide 77/8 IADC 622 TCI Roller Tricone Rock Drill Bits. Ready to Ship. $750.00 Piece. 1 Piece (Min. Order) $224.50/Piece. Hebei Crossing Drill Bit Manufacture Co., Ltd. CN 4 YRS. 4.7 ( 1) Contact Supplier.
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