Commercial Aluminum Solar Road Stud Deck Dock Light with Recessed Anchor-Amber Automatically illuminates when night falls or with the onset of inclement weather Provides up to 18 hours of light and has a visual distance of 800 yards 6 LED Lights Maximum Compression: up to 30 tons Dimensions (not including anchor) 5.19" x 4.8" x .9" (L x W x H); Anchor Dimensions 1.22" x 2.08" (W x H)