The document outlines different types of wrenches, including adjustable wrenches, combination wrenches, box-end wrenches, hex keys, and pipe wrenches. Each type is characterized by its specific design and intended use, such as the adjustable wrench's movable jaw and the combination wrench's dual-end functionality. Additionally, hex keys are available in different forms like L-shaped and T-handles, and pipe wrenches are designed for working with threaded pipes.

1. What kinds of
wrenches are there?

2. Adjustable wrench
The most common type of adjustable wrench in use today.
An adjustable wrench is a flexible tool with a movable jaw
allowing one to use it on different sizes of fastener heads.

3. Combination wrench
A combination wrench is a double-ended tool that is sued
for performing specific tasks. While one end is a box-end wrench,
the other is like an open-end wrench.
Both ends generally fit the same size of bolt.

4. Box-end wrench
this is a one-piece wrench with an enclosed opening
that grips the faces of the bolt or nut. The recess is
a six-point or twelve-point opening that opens nuts
and bolts with a hexagonal shape

5. Hex keys
A Hex keys(allen key) used to turn screw or bolt heads designed with a hexagonal socket (recess) to receive the
wrench. The wrenches come in two common forms: L-shaped and T-handles.
The L-shaped wrenches are formed from hexagonal wire stock
The T-handles are the same hex wire stock with a metal or plastic handle attached to the end. There are also
indexable-driver-bits that can be used in indexable screwdrivers.

6. Pipe wrenches
Pipe wrenches are used to tighten and loosen threaded pipes, serrated jaws
that automatically fit onto a soft iron pipe and pipe fittings.