The Heavy Duty Linkable 40 Watt LED Construction String Lights are a practical and reliable lighting solution for job sites of any size. With five 40 watt lights per string, each spaced 10 feet apart, these lights provide a total length of 50 feet, ensuring ample coverage. The heavy-duty metal cage around each light offers durability and protection. Each fixture head comes with a hanging hook for easy installation. With 1,000 lumens per light and a total of 5,000 lumens, these lights provide bright illumination. They are also linkable up to 10 strings, allowing for customizable lighting arrangements. Suitable for outdoor use, these lights are IP65 rated and can withstand temperatures ranging from -40 degrees Celsius to 40 degrees Celsius.