Emtek Torsion Spring for Key in levers
Inside Diameter - 7/8"
Emtek has stated this spring is no longer available as a separate item.
There may be a spring kit coming, but the lever or knob...
Dorma 95059500
Replacement tornsion spring for some Dorma Hardware - Lever return spring.
Replaces old part number 6000-717-500 for newer Exit Trim Levers
Inner diameter - 1"