... , 15T, 20T, 30T, 40T, 50T, 1Motorized Screw Jack. Motorized Screw Jack/Worm Gear Screw Jack/Worm Gear Screw Jack/Model: RN-0.5T, 1T, 2T, 3T ... worm gear, bearing, housing and lead screw 3. Function: Elevating, Lowering, Pulling, Pressing, Pushing, Rotating 4. Power Source: Manually ... : 84289000Trademark: NOSENOrigin: ChinaMin. Order: 5 sets Motorized Screw Jack/Worm Gear Screw Jack/Worm Gear Screw Jack/