twistoff on the bottom

同义词释义

1)twist-off on the bottom,钻头切削刃折断2)drill edge,钻头切削刃3)cutting head,取心钻头切削刃4)fixed cutter bit,固定切削刃钻头5)cutting lip,钻刃切削刃6)bit and cutting edge group,钻[刀头]和切削刃组件