The TGK Power Tools PC Series Semi-Automatic Electric Screw Driver without Supply is a high-quality tool designed for professional use in industrial settings. As a factory, we take great pride in producing this product, which is durable, efficient and reliable. This screwdriver is semi-automatic, which means it can be used for both tightening and loosening screws quickly and easily. It is also lightweight and ergonomically designed, making it comfortable to use for extended periods of time. This electric screwdriver does not come with its own power supply, allowing you to use a variety of power sources depending on your needs. If you are looking for a quality electric screwdriver for your industrial setting, look no further than the TGK Power Tools PC Series.