... for wires 1) smooth surface 2) ceramic and plastic cover outward 3) 2 Iron nails,copper inside supply GU10 socket ,push-in for ... ) it is small ,light,easy to packing 3)it is ceramic with plastic cover,not easy to break4) with 6MM copper ... time :7-10 days for 50000PCS6) with UL CE VDE certification7)suitable for wirs:0.5mm2-0.75mm2 ceramic gu10 socket push-in ...