Use with all Sun System® reflectors that do not come standard with a socket. These sockets come with the patented male lamp receptacle which is compatible with all Sun System®/Standard ballasts. Flexible "pigtail" strain relief. 5kv mogul base socket. White powder coated junction box. Chrome "V" hanger for easy vertical hanging. Socket Accepts: HPS/MH 250, 400, 600, 750, and 1000w lamps. 25 foot power cord.