21 PCS SCREWDRIVER - It is an integral part of the screwdrivers sets. Easy to remove all types of nuts, screw as it has a variety of bits SLOTTED BITS - They have the shape of a flat blade and are designed to work with screws, which are used in the simplest connections of objects such as socket outlets, keyholes, furniture shelves, etc. PHILLIPS BITS - have a conical shape and four faces that fit tightly into the cross-slot of the fasteners. Thanks to this, more points of contact are obtained and work with the slot is more efficient. POZI AND HEX BITS - The working part of Hex bits has a section in the form of a hexagon. Such tools have high torque, it is almost 10 times greater than the torque of the Phillips screwdriver. Pozi bit, in addition to the cross profile, has four additional faces of a smaller size. It fits more tightly into the fasteners than the ordinary crusade; it is used for fastening with a low slot, which is used for furniture assembly and for the installation of various structures TORX BITS - The profile of the working part has a section in the form of a six-pointed star. Fasteners with such slots are used for the assembly of cell phones and other electrical equipment.