Despite the rapid development of technological progress, some tools remain unchanged and relevant. These include the wrench. Each master and just the real owner has this tool. The wrench is simple in structure and multi-functional. Today on the market you can find slightly improved models designed to make work even more fruitful and easy.
Depending on the configuration, the purpose of this home assistant changes. Therefore, there are many key models. Only for simple tightening and loosening of bolts and nuts are several options provided. But there is a set of wrenches for narrower use.
Each type of this tool has its own characteristics, positive qualities and disadvantages. Therefore, before buying the necessary tool, you need to decide on 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, it also has its drawback. This is a small contact area. When pressed hard, there is a risk of crushing corners.
The crown wrench became the follower of the open-end wrench. This is an advanced option. Its head covers the entire nut, which evenly distributes the load on all faces. Such a wrench allows you to do the job more comfortably and conveniently. It is also made bilateral, with different head sizes.
The hybrid of these two types has become a combination key. One head is a horn tool, and the second is a cap type. This allows you to use the right tool depending on the situation.
An adjustable wrench has become an even more advanced model . It is used in situations where there is no way to pick up a key of the right size. The size of its head is adjustable. However, experts do not use this tool so often. It does not fix the nut too much and is uncomfortable in size.
Today, many craftsmen 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, a socket wrench, which is equipped with a special cylinder in which the nozzles are mounted. There is also a bendable end option, which has a flexible insert in the middle.
For fixing fasteners having specific faces, special keys also exist. These include hexagonal, 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 wrenches, which will include all the most popular types. In any case, this is a very important and necessary assistant in every household.