A wrench is an essential tool that is used across many different industries. It’s an incredibly versatile tool that can be used in a variety of situations and applications. But how many wrench sizes are there?
The answer to this question depends on what type of wrench you’re referring to. Generally speaking, there are three types of wrenches: open-end wrenches, socket wrenches and adjustable wrenches.
Open-end wrenches come in a variety of sizes, from extra small to extra large. Generally, sizes are numbered in reference to size of fastener being worked on, with smaller numbers being smaller sizes. The sizes range from 0 to 24, with a 0 size being smallest and a 24 size being largest.

Socket wrenches are slightly different in that they come in a variety of socket sizes. These sizes range from 4mm to 42mm, with smaller numbers being smaller sizes. Socket wrenches are also available in other measurement systems, such as fractions and decimal inches.
Finally, there are adjustable wrenches. These wrenches are designed to be adjustable, meaning that they can be adjusted to fit a variety of sizes. The size of an adjustable wrench is based on jaw length, which can typically range from 1/8-inch to 7-inches.

As you can see, there are many different sizes of wrenches available. The size of wrench you need will depend on job at hand, so it’s important to make sure you have right size for job.
In conclusion, there are many different sizes of wrenches that can be used in a variety of applications. The answer to how many wrench sizes are there depends on type of wrench you’re referring to, but generally speaking, there are a wide array of sizes available. It’s important to make sure you have right size of wrench for your job in order to get best results.