Extension spring used on early Williams 50 step unit assemblies and others...
CALIFORNIA WARNING
This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information, go to https://www.p65warnings.ca.gov.
Extension spring used on early Williams 50 step unit assemblies and others.
Reference:
10A-24210-42410A-22410A-22710A-228C-6510 non-resetting 50 step unit with bellC-6510A non-resetting 50 step unit without bell

Extension spring used on early Williams 50 step unit assemblies and others.

4 piece spring kit replaces most commonly worn springs on Williams 50 Step resetting step units.
Extension spring used on early Williams 50 step unit assemblies and others.

Spring - extension 10-183
Extension spring used on early Williams 50 step unit assemblies and others.
Spring - extension 10-204