Ushio 2-Pin Plug-In CFL lamps and 4-Pin Dimmable CFL lamps are available in 2700K, 4100K, and 6500K color temperatures. Plug-In CFL lamps require a 120W magnetic ballast adaptor with a medium base for use in a standard incandescent lamp socket. High quality compact fluorescent lamp. Please check your base type against the base type listed in each lamps description text. Product photo's are only for illustration purposes; do not use photo's to determine if our lamp matches your lamp.