120V 4-Pack of 7Watt F15T8 LED Tube Light,Rotatable end caps,18" (17-3/4" pin to pin) Length,5500K Daylight Color,Frosted Cover 120V only,can not work for 12V RV system,please check your fixture by avoiding return it.4-Pack of F15T8 LED Tube Light-18" (17-3/4" Actual Length) 7W (15W Equivalent), Daylight 5500K, Double-End Powered, Frosted Cover, Works from 85-265VAC - Fluorescent Replacement Bulbs for Under Cabinets Lighting Fixtures Rotatable end caps: light forwarding angle can be adjusted by +-90 degrees to fit any light fixture.These lights give off great bright light and it was very easy to convert the old light fixture to use the new LED bulbs ,The removal of ballast and rewiring for the installation was very simple. Must bypass ballast and rewire your fixture before you insert the led tubes.Wire positive one end and negative to the other end. If the product is defective within 2 years, please contact us and we will give you a good solution. Instant-On Daylight White 5500K to replace 110/120V standard 18" CFLs: Actual length 17-3/4" from pin to pin,Please be noted this is 120V only,check your voltage to avoid return