Despite the rapid development of technicalprogress, some tools remain unchanged and relevant. To them it is possible to carry and a wrench. Every master and just a real master has this tool. The wrench is simple in its structure and multifunctional. Today in the market you can find slightly improved models, designed to make labor even more fruitful and easy.
Depending on the configuration, thethe appointment of this home helper. 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 spanners and for a narrower use.
Each kind of this tool has its ownfeatures, 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 a spannercarob. 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 became a ringtool. 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.
Hybrid of these two species has become a combinedkey. 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 theadjustable wrench. It is used in those 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 tightly 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 thistools that are used in specific situations. This, for example, is a socket wrench, 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 with specific faces, there are also special keys. They include hexagonal, star-shaped, bristol and chain tools.
A good master is always at handseveral 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.
