Socket wrenches are good for working on automobiles and other machinery. Although standard-size sockets are fine for most applications, deep sockets are available for situations where the bolt is recessed. Both can turn nuts in tight spaces. Self-adjusting wrenches automatically adjust to fit the size bolt you're working on. These wrenches are self-ratcheting, meaning you don't have to remove them from the bolts as you're tightening.
Adjustable wrenches accommodate nuts and bolts of various sizes.
They're designed to move in only one direction, which prevents putting too much stress on the adjustment screw that sits just below the head of the wrench. An adjustable wrench's head is offset a little, which helps when loosening or tightening. Box and ring wrenches are excellent for leverage but not always suitable for tight spaces. The open-ended wrench has flat jaws that slide around the heads of nuts and bolts. The open end permits the head to fit over a nut in a tight space.