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/HENGP含钴不锈钢钻头直XCG柄麻花钻12.3/12.613头.4//13.914.6
钨钢内冷钻头13.1 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.914mm
耐特 锥柄麻花钻12/12.9/13/13.914/14.9/15/15.5/15.6/16
内冷涂层钻头13.1 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.914.0
钨钢内冷钻头13.1 13.2 13.3 13.4 13.5 13.6 13.7 13.8b 13.914m