C9 Intermediate (E17) Light Bulb Socket - With Solder Tabs
Amazon.co.jp: Panasonic LDA7WWGE17ESW2T LED Bulb, Base Diameter 0.7 inches (17 mm), Equivalent to 60 W Bulb, Warm White Equivalent (7.1 W), General Light Bulb, Wide Light Distribution Type, Pack of 2, Insulation
Light Bulb & Socket Guide: Info on Sizes, Types & Shapes | PartyLights