Manttotech 8W LED tube light, LED replacement for fluorescent bulb tubes(F15T8). Pack of 4(120V-240V) 8w led tube light equal to F15T8 18in fluorescent bulb No mercury and other hazardous materials,fully ROHS-compliant,100% recyclable Saves money by consuming 80% less energy than converntional lighting Has an extremely long life span of approximately 50000 hours Quick and easy installation to minimizeretrofit costs