Feit Electric 7-Watt EQ C7 Soft White Medium Base (e-26) Dimmable Incandescent Light Bulb (4-Pack) in the Specialty Light Bulbs department at Lowes.com
Amazon.com: Holiday Lighting Outlet Faceted C7 Christmas Lights | Sun Warm White LED Light Bulbs Holiday Decoration | Warm Christmas Decor for Indoor & Outdoor Use | 2 SMD LEDs in Each
C7 Projector Series™ SMD LED | Village Lighting Company
C7 LED Christmas Light Bulbs | Smooth – HLO Lighting