bit holder meaning in English

锥柄
钻套
钻头打捞钩
钻头夹持器

The parts and units of jigs and fixtures . fixed bit holder
机床夹具零件及部件.固定钻套
The parts and units of jigs and fixtures . bush for bit holder
机床夹具零件及部件.钻套用衬套
The parts and units of jigs and fixtures . quick change bit holder
机床夹具零件及部件.快换钻套
The parts and units of jigs and fixtures . intec hangeable bit holder
机床夹具零件及部件.可换钻套