Save hundreds of dollars on expensive outdoor lighting! These solar-powered Disk Lights™ are perfect for walkways, stairs, railings and more – no wires or batteries required! The bright disk lights automatically shine at night to provide up to 10 hours of light, and then they turn off automatically. Disk Lights can be used on any horizontal or vertical surface. Stakes are included for ground use. Made of durable, waterproof plastic and stainless steel. Each measures approx. 4 1/2"Dia. and has 4 LEDs per light that last over 10 years.