Common plastic clear minipost used in pinball machines.
Yellow translucent mini post originally used on Jersey Jack Pinball's The Hobbit pinball machines.
In regards to functionality, but not color, this plastic post is also a suitable replacement for all the part numbers listed below.
Williams/Bally reference #03-8044-9, 03-8044-13 & 03-8044-12.
Stern/Sega/Data East reference #550-5052-01 & 550-5052-02.
American Pinball reference #PST0006-00.
Chicago Gaming Company reference #PIN-03-80449 & PIN-03-804413.