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Rock Drill Tools Hollow Rod na may mga thread bits
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Magandang kalidad na Hexagonal Hollow Drill Rod sa China
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Bagong Designed Tungsten Carbide Insert Cross Drill Bit para sa Pagmimina
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Hot-sale rock drilling tools thread button bit E-thread D-thread H-thread
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7,11,12 Tapered Degree Quality Taper Cross Bit
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34mm 7 Buttons 7 Degrees Taper Button Bit para sa Pagmimina
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32/34/36/38/40 7 Button taper rock drill button bit para sa hard rock drilling
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11 Degree 38mm Tapered Rock Drill Button Bit para sa Rock Drilling
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7 Button Bits 32mm Tapered Button Drill Bits para sa Pagmimina
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34mm taper drill bit button bits tapered rock drill bits para sa pagmimina
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