On wrench is required for tightening or loosening 6 hex bolts and nuts. It comes in different sizes, which are indicated by the wrench size. So is the size at a combination wrenchmeasured by the distance between the two parallel surfaces. With a key width of 10, there is accordingly a distance of 10 mm. The size is also each as an embossment on the respective wrench seen.

The different variants of wrenches
– The jaw or wrench is the most common type of wrench and can be found in almost every household. The key jaw is usually angled at 15 ° to the tool handle to work better in confined spaces. For the same reason, an angle of 75 ° is also common.
A special form of the wrench is the Adjustable Wrench, which colloquially also Englishman is called and equipped with an adjustable wrench size.
Another special form is the so-called ratchet, a fork wrench that can be freely rotated in one direction. In the other direction then the screw or nut is rotated and thus loosened or strengthened. Due to the ratchet function, the use of the tool without intermediate discontinuation is possible.

– Of the key ringhas, as the name suggests, a ring instead of a mouth, which is placed around the nut or screw. This ring has a hexagon or double hex profile and can be either angled or cranked for ergonomic reasons.
The cranked open-end wrench is a combination of ring spanner and open-end wrench.
The block key, or starter key called, is a ring key with an arcuate lever. This is usually used in a car workshop.
– Of the socketor pipe wrench / pipe socket wrench is usually in the form of a tube by the respective hexagon contours are impressed at one or both ends. So they can be put on the appropriate screws or nuts well. If the socket wrench has transverse holes, then turning pins can be inserted there. The rotation creates a lever effect that simplifies the loosening or tightening of the nut or screw.
The craftsman remains flexible when he acquires a socket set. In one tool boxYou will find here mostly different drive parts such as a ratchet, a handle or hinge handle and the aufzusteckende tool part. This is colloquially also called socket or nut and is represented in the most popular sizes.

What to look for when buying wrenches
Of the wrench , no matter in which variant, is a helpful remedy, which is often used in private households and workshops. That’s why he should not be missing in any household. wrench can be found in every hardware store and occasionally as an action at the discount store. The supply and the price range are large, which can make the decision more difficult. Qualitatively there are hardly any differences in the simple wrenches according to independent test results. Therefore, one can confidently opt for a cheaper model of a wrench. However, if you want to buy a ratchet, for example, you should prefer a higher quality product. A ratchet wrench set is generally very robust and suitable for many work around the house, garden and hobby. If you want a little more comfort, you should use a model equipped with a reversible working direction and / or a locking mechanism. In any case, you should compare different products and different manufacturers before buying so that you can buy a cheap, but still high-quality set of wrenches.