Socket bits from 5 to 13 mm. Includes extensions of 50, 100, and 150 mm. Nuts and screws are securely held in channels by the magnetic insert even when using extensions. Standard bits (25 mm) made from chrome-silicon-manganese-molybdenum alloyed special steel: TX 8 to TX 45 (with end-side drilling), HX sizes 2.5 to 6, PH 1 and 2, as well as slotted 5.5 mm. Other contents: universal joint and female hex/square adapter. Except for the standard bits, all parts are nickel-plated twice and matte chrome-plated once. Packaged in a sturdy steel box (powder-coated). Material: chrome-vanadium steel, nickel-plated twice, matte chrome-plated once. Handle: TPR. Precision mechanic set with 1/4 MICRO compact ratchet. Several of the 72 teeth engage simultaneously and transmit an extremely high torque. Features a release mechanism: loosening of the insert tools with the push of a button. Nuts and screws are securely held in channels by the magnetic insert during work.