Great for docks, decks, pathways, stairs, anywhere you need a night light to help watch your step. Super bright Solar Dock Dots are brilliant little lights that really stand out at night. Solar dock dot lights are compact and uniquely designed to be nearly flush once they're mounted along your dock or deck. Easily installed in minutes, these dock dots require drilling a hole in your dock or deck using a 1-3/8" drill bit or hole saw. A super bright LED and powerful solar panel provide all night illumination. IP68 waterproof rating. UV-stabilized polycarbonate housing and integrated circuit protection make the solar lights ideal for marine environments. Solar batteries are easily changeable. 12-18 hr. run time. LED life expectancy is greater than 100,000 hours. 1.4"H x 1.4" diameter (with 1.7" lip). 4 per pack.