Features:1.Material: ABS Plastics + metal.2.Simple to use and allows you to keep using conventional light bulbs or compact fluorescents.3.Works with incandescent, CFL (Energy Efficient) bulbs and LED bulbs.Specifications:Usage: Change GU10 port to E27Dimension: 5.8 x 3.3 cm (Appro H*D)Net Weight: 18g for eachColor: whitePackage content: 7 x GU10 to E27 Commutator