The LH0360 8751 is an EX39 mogul base socket / lampholder. It is a pink glazed ceramic socket denoting that it is for open fixture rated HID lamps. This prevents standard E39 / E40 HID's being used in fixture and causing a hazaardous situation. The LH0360 8751 is 4kv pulse rated and 1500w 600v rated. It has 12 inch leads and "cat's eye" washers to keep the lamp grip shell being seperated from the socket. The LH0360 is similar or equal to the Leviton 8751-200, Miller OEM L88751 and the DM Techbology MSOF.