All 24 bit is crafted from steel, which have undergone high-frequency quenching and hardening, with high hardness and durability The surfaces of the bit have been plating for rusts Perfect for household repairs, smartphone maintenance, and automotive applications where small size design and adjustable lengths enhances workspaces accessibility Multifunctional ratchets and screwdriver set: ergonomically handle for comfortable and secure grip The steel screwdriver head adopts advanced technology Assisted high-precisions integrated molding, heat, industrial service life, hard and not easily dameged, with full toughness By freely adjusting the different combinations of three extension rod, different working mode and lengths can be changed, which is flexible and, meeting different working occasions: working length, force length, and grip feel By turning the ratchets switching, the forward and reverse ratchets mode can be achieved, Manufacturer: Tsophreniq