CALIFORNIA WARNING: This product can expose you to chemicals, including lead and DEHP, which are known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information, go to https://www.p65warnings.ca.gov.
OEM 5 inch round 4 ohm - 7 watt speaker for pinball machine and arcade games.
5-1/2 inch diagonal hole to hole
Depending on availability, speaker may be a slightly higher wattage and is considered an upgrade.
Reference:
Williams 5555-12469-00