"A 4-way lug wrench. Useful for removing nuts."
Lug Wrench (クロスレンチ kurosurenchi ) is a key item in Resident Evil 7: Biohazard.
The Lug Wrench is meant to be used on top of the elevator in the Wrecked Ship to allow access inside.
The Lug Wrench is located on the desk in the Captain's Cabin on Wrecked Ship 4F.