we are manufacturer in Minqing , Fujian of China. Best price and good quality ! 1.product's name: E12 procelain lamp holder 3.voltage :250v       electric :4A 4.main material :high pressure & ceramic , porcelain . iron/ aluminum /copper . 5.size :as your requested . 6.avalable wire :0.75mm2 , 0.55mm2 7.contact type :screw style , acceptacle style . 8. packing : standard paper box and safe shipping . 9. delivery time : 20 -30 work days after order confirmation .