1964-77 GM 9 1/2" Rear Drum Brake Wheel Cylinder Pins, 4 pc This is a 4 pc set that includes the drum brake pins for both sides of the car. 9 1/2" brakes. This is the pins that go into the wheel cylinder and ride against the brake shoes they are always rusty from fluid and worn out from riding on the shoes. These pins push the shoes out every time you press the brakes.
