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How can I tell if I have a new ND lock or the previous design?
ND locks shipping on or after January 30, 2017 will look very similar when assembled to their predecessor that shipped prior to that date. There are several ways to distinguish the old versus the new.
See attached differences; springcage spindle design, lever engagement design, lever pushbutton opening, and push/push-to-turn button size and shape.
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