SWL Electric Nut Lifter With Motor 1/2.5/5T 380V High-Precision Vertical Small Lifting Platform Adjusting Screw Electric Lifter 1. Confirm the model: SWL1T/SWL2.5T/SWL5T. The structure is as follows: the screw rod rotates, and the nut on the screw rod moves up and down!
