Specifications:Socket: Standard GU10Material: CeramicDimensions:1*7/2*18 Features:Lamp Socket Fitting Extender/Adaptor/HolderSafe and Easy to installFit for all voltagesPackage Include: 4Pcs GU10 Lamp HolderNotice:1. Please enable 2-3% error due to handbook measurement. The colours can have different because the contrast display, please understand.