Comparison JONNESWAY D02AP08S vs JONNESWAY D02AC07S

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.

A screwdriver-shaped device consisting of a thin metal tip, a transparent dielectric handle, a high resistance resistor, a contact plate on the back of the handle, and a signal lamp. Designed to determine the phase wire, the presence of voltage in the network, diagnostics of automotive on-board networks. Voltage indicators with batteries allow you to ring the electrical network for breaks. Advanced indicator screwdrivers are suitable for non-contact detection of wiring under a layer of finishing material and can be equipped with a light and sound informant.

Automotive indicators operate with a voltage of 6 to 24 V (less often — from 3 to 48 V) and can be equipped with a "crocodile". The rest are designed for voltages of 230 V and 400 V (sometimes up to 500 V).

— Plastic case. A rigid container made of plastic and designed to be easy to carry in your hands: small cases can be held directly by the body or put in a bag, larger varieties are equipped with a handle and look like suitcases. Actually, ease of transportation is the main advantage of all cases. And plastic, at a low cost, is not subject to corrosion, has a relatively small weight, does not cool the hand very much at low air temperatures, and besides, it can easily be given an original shape and colour. The strength of this material is somewhat lower than that of metal, but this drawback is not critical. This is due to two points: firstly, rather strong varieties of plastic are used for tool cases, the reliability of which is quite sufficient for most cases; and secondly, due to the mentioned lightness, the walls of the case can be made quite thick without sacrificing ease of use.

— Metal case. A variety of cases — boxes or suitcases (see above for details) — made of metal. Theoretically, this material is stronger and more reliable than plastic, but in fact this feature is partly (and sometimes completely) leveled by the fact that the wall thickness in metal cases is less than in plastic ones — otherwise the weight of the container would be too large. In addition, metal can bend under impact (whereas plastic usually springs), and it costs more. Therefore, this type of case is used relatively rarely....

— Case / bag. This category includes various devices made of soft materials. They are usually designed with handles, straps and other accessories for easy portability and are more compact than hard cases. On the other hand, soft materials are less durable and offer poorer protection both from moisture and dust and from the impact of tools on surrounding objects in case of accidental collisions; therefore they are used infrequently.

— Lodgement. Device in the form of a flat surface with recessed cells for tools. It is designed to be permanently in one place, and in most cases in a horizontal position. So this type of tool storage is especially appropriate when working in one place, not for carrying.

— Stand. Another type of stationary storage of tools, like the lodgement described above. Only in this case, the instruments on the stand are placed vertically. Thus, you can quickly get what you need and continue working. There are both desktop and wall-mounted versions.

— Plastic holder. A way to store sets of keys, which is a small plastic structure with recesses for different tool sizes. Moreover, in most cases it has the possibility of suspension.

— Box. Boxes usually mean containers made of rigid materials, rather large and poorly adapted for carrying in hands (this is their main difference from the cases described above). However such containers are more convenient for transportation than coasters / trays, but they are still designed more for a long stay in one place than for constant movement.

— Trolley. Characteristic design on wheels, with a handle for easy transportation. Carts are quite bulky and designed to be rolled, not carried; it makes sense to use them only in extensive professional sets for several hundred items that cannot be carried by hand.

— Multitool. A kind of tool kits, where all the elements are concentrated in one case and change like in Swiss knives, being removed one by one from the case. It is a pocket, hiking option for all occasions, but mostly these are sets of hex wrenches (a godsend for a cyclist).

— Cassette. A relatively small package that can have a different design — for example, in the form of a lodgment covered with a transparent lid or a plastic holder with holes for individual items. Actually, the presence of nests for each item is a common feature of all cassettes.

— Rail. A kind of metal "clip" — a strip with curved edges forming a gutter. In this chute, bits and end bits are fixed side-by-side by the shank. Many rails are designed to be inserted and removed in turn, so that you can only get to the item in the middle of the row by removing some of the items from one edge.

— Ring. Both a bunch of keys fixed on a ring and wrenches can be stored on a similar ring, naturally stronger and larger in diameter. In general, a fairly simple solution to keep all the keys at hand.

The dimensions of the entire set, namely the case, lodgment, cassette, etc. storage accessory (see paragraph above) with tools installed inside. Allows you to understand how much space the model will occupy and whether it can be placed in a complete set in one place or another.

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.