When working on any automotive project, having correct tools is essential. One of handiest tools to have around is a wrench set. Wrenches are used for many different types of tasks, from removing and replacing bolts, to working with nuts and washers. Understanding which sizes of wrenches you will need for a job is important for completing task quickly and efficiently.

When buying a wrench set, it's important to know various sizes of wrenches available and which are most commonly used. The most common sizes are ¼-inch, 5/16-inch, 3/8-inch, 7/16-inch, ½-inch and 9/16-inch. These sizes represent size of open end of a wrench and correspond to size of bolts and nuts most commonly found in automotive projects.

However, depending on your project, you may need a different size of wrench. For instance, if you're working on a classic car or a custom project, you may need to work with bolts that are not in standard sizes listed above. In this case, it is important to know size of bolt or nut before you buy a wrench.
In addition to standard sizes listed above, there are also metric wrenches available in sizes ranging from 6mm to 24mm. These are more commonly found on modern cars with metric components, but you can find metric wrenches for older cars as well.
It is also important to know types of wrenches available. The most common type of wrench is open-end wrench. This type of wrench has two ends: one open end and one closed end. The closed end is used for gripping nuts and bolts, while open end can be used to quickly remove nut or bolt.
Another type of wrench is adjustable wrench. This type of wrench has a movable jaw that allows it to fit different sizes of nuts and bolts. This type of wrench is great for projects where one size won't fit all, or if you're uncertain of size of bolt or nut.
Finally, there are a variety of specialty wrenches such as box wrenches, socket wrenches, and Torx wrenches. These are used for specific types of projects, so it's important to know which type to use and which sizes to get.
In conclusion, understanding various types and sizes of wrenches available is essential for completing any automotive project. Knowing most common sizes and types of wrenches will help you make sure you have right tools for job. Additionally, it's important to know when to use specialty wrenches for particular projects. With right sizes and types on hand, you'll have what you need to get job done quickly and efficiently.