1-1/2" White Rubber Ring
Ships from US and is sold by Pinball Life$0.40
Williams reference #23-6304.
Bally reference #R-521-2.
Gottlieb reference #A-10220.
Early Stern reference #7A-120-150.
Stern/Sega/Data East reference #545-5348-57.
Jersey Jack Pinball reference #25-002003-24-9.