T51 4' (102mm) Balilstic Flat Face/Concave Drill Button Bit
T51 Drill Bit, Threading Drill Bit, 89mm Threading Bit manufacturer supplier in China, offering T51 4' (102mm) Balilstic Flat Face/Concave Drill Button Bit, 12degree Q7-32mm Tapered Button Bit for Taper Rod, Hot Inset Rock Drilling Taper Button Bit for Mining Stone and so on.
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