Amazon.com: ID: 2PCW. 2 New Generic Clear Push-in Sewing Machine Light Bulbs, 120V-15W, Compatible with, not Manufactured by Singer. Will fit Singer Featherweights 221/222, Plus Many Others.
Vacuum Push-in LED Light Bulb AC28GADFZ00 Double Contact Bayonet Base BA15D LED Bulb AC110-130Volt - for Kenmore | Singer 15-66, 99, 201, 221, 222, 401 Sewing Machine Pack of 2 (Warm White) - Amazon.com