Shown above are some of the radios that these bulbs typically fit in. These bulbs will fit CD or Cassette Radios.
This is A Package of 10 Terminal Incandescent Lamps, 3mm in Diameter with 20,000 life hours 12 volts @ 60 ma and 1″ leads and they Solder to p.c.b . You can find them in many Delco radios. The replacement bulbs no longer have the plastic base due to a burnt smell once they get hot.