SWL1T hand crank 1 circle screw rod up 0.66mm. SWL Fixed Lift Platform Electric Lift Screw Hand Crank Small Screw Lift Interlocking Worm Gear. 5T (the actual load is about 500kg). 5T hand crank 1 circle, the screw rod rises 1mm.
Swl1T/2.5T Leading Screw Lift Collar Cegar Hand-Cranking Worm Worm SWL Lift
Leading Screw Lift Collar Swl1T/2.5T/5T Hand-Cranking Worm Worm Swl Lift Reducer
SWL Leading Screw Lift Small Lifting Platform Hand-cranking Lead Screw Lifter