bit puller是什么意思

网络释义

1)bit puller,钻头拧卸器2)screwing and drlling,拧卸钻孔3)drill stem mounting & dismounting,钻杆拧卸4)swivel wrench,钻头装卸器5)breaker lug,钻头装卸器突楞6)break out a bit,卸下钻头