Total number of items
The total number of core items included in the set.
In this case, the main items are all devices that are directly used during work: non-separable tools (traditional wrenches, hammers, pliers ...), elements of collapsible tools (for example, a ratchet for removable heads and 5 such heads will be considered 6 units) , as well as accessories (such as extensions or universal joints). Additional accessories — such as lights — may or may not be included in this count, depending on the manufacturer; however, there are usually few such accessories, and they do not fundamentally affect the total number of items.
The most modest modern tool kits include
up to 25 units. However, such kits are very popular — they are inexpensive and at the same time can be very versatile.
25 – 50 items is still quite a small number,
50 – 75 pcs can be called an average,
76 – 100 items are more than average, and the most extensive modern sets can include
100 – 150 items or even
more.
The general rules for choosing this parameter are obvious: a more extensive set, usually, is more multifunctional, but more expensive, weighs more and takes up more space. It is also worth bearing in mind that with a similar number of items, the specific assortment of these items in differ
...ent sets may be different; so when choosing, it is worth specifying not only the number of tools, but also their specific composition.Bits
The number of
bits supplied with the tool kit.
A bat in this case is called a working nozzle, which plays the role of a screwdriver tip; in fact, they are most often used with screwdriver handles (see above).
Many types of splines (slots) are used in modern fasteners — starting with the well-known
straight, cross-shaped (
Phillips and
Pozidriv),
Torx sprockets and ending with exotics like Torq-set (a cross with lines shifted from the centre), Pentalobe (with five ledges), etc. .P. In addition, the size of the slots can also vary, and in many cases, tool matching in size is very important. Accordingly, the more bits supplied with the set, the more versatile it is, the higher the probability that it will contain a nozzle of the desired type and size. However, the specific list of bits in the kit also does not hurt to clarify — in order to make sure that it has all the varieties you need. In the characteristics of individual sets, these data are given in the paragraph "Bit sizes" (see below).
Adapter
An adapter for docking seemingly incompatible elements from a set. For example, socket heads with an unsuitable landing square on a ratchet, screwdriver handle or in a drill driver.
The adapter provides full-fledged work with all the required list of tools from the set.
Wrench sizes
Dimensions of the wrenches supplied in the set. Specified as a range — from the minimum to the maximum size. In this case, the specific distribution of different types of keys over the range may be different. An example is the following set: 17 open-end wrenches, 5 box wrenches, size range 6 – 24 mm. In such a set, box wrenches are almost guaranteed not to cover the entire range of sizes, but for open-end wrenches, this is quite likely. Such details can be specified separately.
Also note that a wrench size of
24mm or more is considered quite large for today's general purpose tools. However, on the market you can find sets that include wrenches for
27 mm,
30 mm and even
32 mm.