Spring King winding units are also designated as Simple Set winders under the Amarr Garage Door brand. These winders are designed to make it easy for the DIY homeowners to safely wind their torsion springs.
The winders mount to the ends of garage door torsion spring shafts, with the left wind spring mounted at the left end and the right wind spring mounted at the right end of the shaft. Spring King and Simple Set winder kits are available for 7' and 8' high garage doors, for both left and the right wind springs.
Spring King and Simple Set winders use standard 1 3/4" and 2" inside diameter springs that are available on our Standard Garage Door Torsion Springs page. For information on how to measure a spring's wire size, see our How to Measure Torsion Springs page.
You will need to match the kit to your wire size and door height so the spring is stretched the proper length before winding.