This 28mm. E10 mini bulb screw-type lamp holder which comes with a bulb is designed to produce 1.5 volts at 0.3 amps, making it suitable for various low-power electrical applications.
Diameter of lamp holder: 28mm approx.
Material: Phenolic with brass contacts.
Bulb: E10 Screw type 1.5V @ 0.3 amperes