A screwdriver is called a hand tool, used when screwing and twisting a nut or screw. Such devices are capable of functioning from electric networks or from the battery, And pneumatic options - from a compressor or gas cylinder (which is most often used by air). To work with a diverse type of screws and screws, Apply interchangeable nozzles, having a number of various tips, Called by bits. They are steel rods with a hexagonal shank and working end, which is inserted into the slots of fasteners. Today there are many quality products, eg, screwdriver Bosch has a whole list of positive qualities. 
Design and types of screwdrivers
- The screwdriver is equipped with a screwdriver:
- engine;
- Many couplings;
- gearbox;
- electronic block;
- clamping cartridge;
- battery.
Types of these devices quite a lot, But if you understand and highlight only the main, then one of the most famous will be a screwdriver, only with fasteners. Besides, There are batteries, capable of drilling holes. Such devices are very universal and able to rotate spindles with high speeds.
Today on sale there are devices in the form of screwdrivers with batteries, which can be used for quick twisting, But at the same time, the stopping mechanism will allow them to be used as ordinary analogues. There are similar devices, The power source of which is galvanic elements.
Modern devices are capable of working in various modes, And the more there are, The higher the price of the device. It is worth buying a high -quality construction tool once, And he will serve faithfully for many years.
We recommend to the overview! Watch the video for this article test of screwdrivers at the construction site. And what a screwdriver did you buy?
