A box end wrench is used to undo or tighten nuts when a lot of torque is required. When working under my car on exposed nuts and bolts, a box wrench will remove nuts that an open end wrench will 'round'.
A box wrench has a closed end and is used to tighten or loosen nuts or bolts.
Open end wrench, box wrench, gear wrench.
Open end, box end, with 6-point or 12 point box end, flare end, ratcheting end-wrench, Crescent (or aka adjustable), crowsfoot, pipe wrench and more
A box end wrench goes all the way around the nut, like a slice of a socket. An open end wrench grips just on two sides.
Adjustable Wrench , open end wrench , box wrench, socket wrench, monkey wrench
A combination wrench has an open end on one end and a box end on the other. The 18mm designates what size nut/bolt the wrench fits.
A spanner is another word for box-end wrench. So, a 14 spanner would be a metric size 14 box-end wrench.
An open ended wrench is for fast tightening and loosening of clean, regular nuts and bolts. If the nut is very corroded or rusted, use a box wrench instead.
No, it is a wrench with a completely round head on one side.
A box wrench has that feature.
It was invented during WW1 .