ボックスレンチ

noun

socket wrench; box wrench; socket spanner

A wrench with a hollow cylinder that fits over a nut or bolt head; common in automotive and mechanical work.

• 車くるまのタイヤ交こう換かんにはボックスレンチが必ひつ要ようだ。

  You need a socket wrench to change a car tire.