This is a new trunk lock cylinder retainer clip that holds the cylinder in place in the trunk lid.  Includes as shown.
This fits:
68-72 Chevy Chevelle Malibu 2 & 4 door models
70-72 Buick GS Skylark 2 & 4 door models
Per California Law (Prop 65) we are required to put the following warning on all our listings.
WARNING:
This product can expose you to chemicals, including lead, which is know to the state of California to cause cancer, birth defects and or reproductive harm – www.P65Warnings.ca.gov