... priceselling well in the world mark GU10 porcelain lamp holder1. material: Body:porcelain,metal fitting Wire:silicon wire,braided wire ... ,2.Wires:silicon rubber wire/teflon wire/wire with braided cover ... G312-1,YMR5041,YMR5014-14.Can be with terminal block,terminal and bracket. The metal with porcelain, iron , copper ,brass, Aluminum- ...