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成量川牌锥柄麻花钻头6.8 11.5 11.6 11.7 11.8 11.912 12.1 12.2
YG10X整体钨钢合金加长钻11.6 11.7 11.8 11.912*100/120/150/200
钨钢内冷钻头11.1 11.2 11.3 11.4 11.5 11.6 11.7 11.8 11.912mm
钨钢内冷钻头11.1 11.2 11.3 11.4 11.5 11.6 11.7 11.8 X11.912m
钨钢内冷钻头11.1 11.2 11.3 11.4 A11.5 11.6 11.7 11.8 11.912m
