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178mm Dhd360 Rock Button Bits Dth Hammer Drill Bit High Air Pressure
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PDC Seret Bor Sumur Air, 3 Bor Diamond Bor Polycrystalline
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Professionl Rock Drilling Bit PDC Diamond Drilling Bit Untuk Prospeksi Geologis
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Bit Bor Air Presisi Tinggi / Tahan Lama Berlian Pdc Bit
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