Presence in a set of wrenches
with a universal joint
This function is found mainly in box and socket wrenches (as well as on the corresponding sides of combination wrenches). The specific number and type of such keys may be different, these details should be specified separately. Anyway, the hinge is a device that allows you to rotate the working part of the key relative to the rest of the tool. This, in particular, makes it possible to work in some hard-to-reach places where it is difficult to reach with a traditional key.
We emphasize that this feature should not be confused with a universal joint, made as a separate accessory; for more details on it, see the paragraph of the same name below, but here we note that a separate hinge is used with collapsible tools — such as ratchet wrenches, knobs, etc.
The total weight of the tool kit. Indicated with a case, stand or other storage/transportation device (see Tool Storage). First of all, you should pay attention to this parameter if you plan to often carry the kit over long distances — the lighter the weight, the easier it will be to do. At the same time, extensive sets inevitably turn out to be weighty.