Automatic Hold Open Clip for Storm Door Closer.
The spring action holds the storm door open.

Spring Length: 15/16 Inch
Spring Diameter: 9/16 Inch
Tongue Width: 13/16 Inch
Base Width: 3/16 Inch
Base Length: 1 Inch
Base Height: 5/8 Inch

Contents: 1 Hold Open Clip

Priced and Sold Each.