Specifications:Item Type: Bulb Adapter Holder Color:WhiteBase Type: E27 Features:This product is mainly used in photographyIt allows 4 continuous bulbs installed in one single socket at the same time.Each lamp socket is made of flame retardant ABS material、 heat resisting and high impactPerfect for studio lighting、 home lighting、 work shop lighting such as garage、 basement etc.Package Included:1 x Bulb Base Adapter