Provide 6 or 12 batch head combinations, suitable for users with different needs, flexible selection, storage, and meet the needs of various scenarios such as daily maintenance, assembly, and projects The special anti slip process ensures a tight fits between the batch head and the screw, effectively avoiding slippage, improving and efficiency during tightening or disassembly, and reducing damage Steel, it enhances wear resistance and resistance, ensuring that the crosshead remain well for a long time during high-intensity work, is not easily damaged, and is suitable for use with various electric screwdrivers Each batch head is 5cm in length, designed ergonomically for easy operating in small spaces, while also improving the forces transmission during screw tightening, making it easy to handle various tasks 6 models, PZ1 / 2 / 3， PH1 / 2 / 3， Suitable for assembly and disassembly operations in complex environments