Bally electromechanical pinball machine extension spring for score and step units.
Reference:
SP-100-121
Select manufacturer to view game compatibility
Leaf switch Bally score counter
Leaf switch Bally score counter
Leaf switch Bally score counter

Drive pawl nylon

Rocker arm nylon Bally
Ratchet hub nylon Bally score counter
Ratchet cam nylon Bally

Plunger - no link, EM counter unit
Spring - extension Bally