A wrench is a perpetual tool

Despite the rapid development of technological progress, some tools remain unchanged and relevant. They can include a spanner. Every master and just a real master has this tool. The spanner is simple in its structure and multifunctional. Today in the market you can find a few improved models, designed to make labor even more fruitful and easy.

Depending on the configuration, the purpose of this home assistant changes. Therefore, there are many models of keys. Only for simple twisting and unscrewing of bolts and nuts are provided several options. But there is a set of wrenches and for a narrower use.

Each kind of this tool has its own characteristics, positive qualities and disadvantages. Therefore, before buying the necessary tool, you need to determine the functions that it will perform.

The most popular model is the open-end wrench. The principle of its action is to fix the nut between the two horns. Typically, these tools are bilateral, that is, they have two heads of different sizes. This key can be called universal. However, he also has his own flaw. This is a small contact area. With a strong press, there is a risk of crushing corners.

The follower of the carabiner wrench was a tool. This is an improved version. Its head covers the whole nut, which evenly distributes the load to all faces. Such a wrench allows you to make work more comfortable and convenient. It is also made two-sided, with different sizes of heads.

A hybrid key was the hybrid of these two species. One head is a horn tool, and the second is a wrap-around version. This allows you to use the right tool depending on the situation.

An even more advanced model was the adjustable wrench. It is used in situations where it is not possible to find the right size key. The size of its head is adjustable. However, specialists do not often use this tool. It does not fix the nut too much and has uncomfortable dimensions.

Today, many masters use torque wrenches. They not only perfectly tighten the nut, but also show the degree of fixation of the fastener.

There are several more varieties of this tool that are used in specific situations. This, for example, is a socket key, which is equipped with a special cylinder, into which attachments are attached. There is also a folding end option, which has a flexible insert in the middle.

To fix fasteners that have specific faces, there are also special keys. They include hexahedral, star-shaped, bristol and chain tools.

A good master always has at hand several varieties of this tool. But you can buy a set of spanners, which will include all the most popular types. In any case, this is a very important and necessary assistant in every household.