Allen wrench

US /ˈæl.ən ˌrentʃ/
UK /ˈæl.ən ˌrentʃ/
"Allen wrench" picture
1.

內六角扳手, 六角扳手

a type of wrench used to turn bolts and screws with hexagonal sockets, also known as a hex key

:
He used an Allen wrench to assemble the furniture.
他用內六角扳手組裝家具。
Do you have a small Allen wrench for this screw?
你有這個螺絲的小內六角扳手嗎?