The suction function of the screwdriver ' s inner hole design facilitates stable fixation of screws during operating, falling off and improving work efficiency The bit is crafted from metal materials, with a hardness of HRC60, strong wear resistance, and is not easily deformed or damaged, ensuring long time use Contains multiple specifications of bit ( PH1, PH2, PZ1, PZ2, straight 4.5mm, straight 7mm, T 15, T20) and sleeves ( 5mm, 6, 7mm, 8mm, 10mm) to accommodate different types of screws and tasks Equipped with a brackets base, it is for storage and can also hanging on wall, saving space and making tool easy to access The set includes various bit and sleeves, lightweight and integrated, suitable for home appliance maintenance, home installation, and woodworking installation, meeting daily household needs, Manufacturer: Hrtyvhin