? Super Bright - 4ft led shop lights feature 4400 lumens brightness at 5000K Daylight White by using only 42W. That is a staggering LED Efficiency of 105 lm/w! Excellent replacement of conventional fluorescent fixture. Energy Savings of up to 75%. ? High Quality - ETL certified for better quality, safety and reliability. This long-lasting LED shop light provides up to 50,000 hours of light before any maintenance is required. ? Linkable - 4ft linkable led shop light use plug connection to connect up to 4 pcs together in your garages, workshops, workbench areas, storage areas, warehouses, basements, equipment rooms, etc. ? Easy Installation - Plug Play. Come with 59" power cord with on/off switch and other small accessories. You can hanging it with the included hanging chains or directly mounted to the ceiling with the included mounting screws. ? Hykolity Warranty - All Hykolity's shop lights are confidently guaranteed for 5 years! We aim for quality followed up with quality customer service directly provided by manufacturer.