The FSJ 12v Track Adapter to fit Lightolier LED by LBL Lighting allows Fusion Jack LED elements to be track-adapted. Fits Lightolier single-circuit track. 60W 120V IN/12V LED OUT electronic transformer housed in black or white casing. Female Fusion Jack port installed. Order elements as FSJ. For ading to your lighting system, the FSJ 12v Track Adapter to fit Lightolier LED is the clear choice.