... install cable spec.:60mm3. light source:250w/400w high pressure sodium lamp4. rated volt and frequancy: 220V(±10%)/50HzFeatures: ... surface3.stainless steel agraffe, fasteners,nuts,bolts4.pervious light cover uses high strength glass,high temperature resistant silicon ... 12mApplications:Large square. Shopping market, blocks, walk street and other public places Solar Street light E40 Lampholder (UL-R28H)