wrench w/ one stationary jaw & another that moves up & down on a worm screw image

Also called Crescent Wrench - You can set its jaws to the size of the nut you need to turn

a tool used to tighten or loosen hexagonal bolt s or nut s

a used to stabilize the steel fitting on the end of the rubber brake line while you loosen the fitting on the hard line

Thumb-screw controlled wrench affording tight fit by varying pincher size.

a wrench that has an adjustable head to fit various sizes of nuts and bolts. Some adjustable wrenches feature a locking mechanism to prevent slippage.

Wrench with a pair of jaws, one of which is movable by means of a screw adjuster. The wrench can be made to fit different sized fasteners.