Screwdrivers with bit holder and square drive

Bit holder and square drive

— the special shape of the chuck of these tools allows you to use both classic bits and bits with a square mount (for example, socket heads) with them. This, for example, allows you to expand the capabilities of a wrench with the functions of a screwdriver, if there are appropriate bits in the kit. In more detail, the features of each fastening are described in the relevant paragraphs — "For the bat" and "Square (wrenches)".