Material: nickel-plated ironPackaging: 1PCSize: Approximately 5 * 5cmColor: SilverThe lamp holder with E40 thread could be switched over into E27 lamp holder to achieve the conversion of varied lamp varieties and meet varied lights standards product has ideal quality, can face up to extreme temperature and long-term use, has nice electric insulation and fireplace resistance, and may make sure the safety of use design is straightforward and straightforward to install. You only need to screw the lamp head into the converter, after which put the converter into the lamp holder without various instruments use of the converter can avoid changing the lamp holder, efficiently saving area and the effort and value of replacing the lamp holder field within the home, office or other places, this converter can be utilized as lengthy as E27 threaded lamps are needed, which is very practical.