Our high lumen 120LM/W T8 tubes using brand LED light source in 600mm(2 feet), 1200mm (4 feet) and 1500mm (5 feet). They can replace traditional T8 tube light with excellent features like long lifetime >50,000 hours, high luminous efficacy and reduces environmental pollution. They use standard G13 socket and work with 100~240VAC. CE RoHS TUV SAA UL approved