This is a 20w R39 Reflector Spotlight with a Small Edison Screw Cap. The R39 Spot are a 39mm reflector with a internal silvered reflector. Halogen Reflector lamps are used in fittings commonly used for decorative applications or used in fittings where they can be directed on to objects.
Manufacturers Part No (where applicable) : R3930SES
This Energizer product is available for just £3.08
at LampShopOnline Ltd