Plastic Shim Spacer 2" Long by 1-7/16" Wide Red Set of 5 Parts California Sidecar

Plastic shim spacer red U shape. Set of five. 1/8" thick by  2" long by 1-7/16" wide. Center groove 1/2" wide 1-1/2" deep. Sides are 1/2" wide.

Came with other California Sidecar parts. Don't know what they were used for. Used to keep parts from rubbing together. Cuts down on vibration.