square shank drill

例句：

1. 1. This square shank drill is perfect for drilling through concrete.
   这种方头钻非常适合钻孔混凝土。
2. 2. The engineer used a square shank drill to make the holes perfectly round.
   工程师使用方头钻使孔洞完美圆形。
3. 3. The square shank drill was easy to handle and precise in its measurements.
   方头钻易于操作且测量精确。