Two (2) Reproductions of GM Part #3709580 Brake Pedal Bushings
I have yet to take a early pedal assembly apart that didn't have dried up and crumbly bushings. 50 plus years is a lot to ask of a piece of plastic.
These are made for 1955-61 Chevrolet passenger cars. They go in the eyelet of the brake pedal and ride on the sleeve assembly (Auto and Manual Transmission). These can be hard to install sometimes, I just cut them at a slant (Like the 5/8" Bushings) and trim if necessary.