Despite the rapid development of technological progress, some tools remain unchanged and relevant. They include a wrench. Every master and just a real owner has this tool. The wrench is simple in design and multifunctional. 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 there are several options. But there is also 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 operation is to fix the nut between two horns. Usually such tools are double-sided, 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 area of contact. When pressed hard, there is a risk of crumpling the corners.
The open-ended tool has become a follower of the open-end wrench. This is an improved version. Its head covers the entire nut, which evenly distributes the load on all faces. Such a wrench allows you to do the work more comfortably and conveniently. It is also made double-sided, with different head sizes.
The combined key has become a hybrid of these two types. One head is a horn tool, and the second is a ring type. This allows you to use the right tool for the situation.
An adjustable wrench has become an even more advanced model. It is used in situations where it is not possible to find the right size key. Its head size is adjustable. However, experts do not often use this tool. It doesn't hold the nut too tightly and is awkwardly sized.
Today, many craftsmen use torque wrenches. They not only tighten the nut perfectly, 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 is, for example, a socket wrench, which is equipped witha special cylinder in which the nozzles are attached. There is also a bendable end version, which has a flexible insert in the middle.
To fix fasteners with specific edges, there are also special keys. These include hex, star, bristol and chain tools.
A good craftsman always has several varieties of this tool at hand. But you can also purchase 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.
