extension arbor for drill holder 钻夹头接长杆
straight shank drill holder 直柄钻夹头
Drill holder shackle device 钻机夹持卸扣器
drill chuck holder 钻夹头刀柄
drill and turning tool holder 钻孔与车削两用刀夹
drill l chuck holder 钻夹头刀柄
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drill bush
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