You have two installation options: 1. attach them directly to the stairs using the back glue. 2.use the included screws and bolts to easily fix them in place. Choose the method that suits your needs and enjoy hassle-free installation. Product Name: Curb Appeal Lights Solar panel: 4.5v/120ma Waterproof grade: IP65 Main material: abs+pc Lamp beads: 24Led Working mode: manual switch + light control Charging time: 6-8 hours under direct sunlight Working time: about 8-10 hours when fully charged Suitable for: gardens, courtyards, fences, parks Package List: 2/4/6 x Curb Appeal Lights Notes: 1. Please allow 1-3 mm error due to manual measurement. 2. Colours may vary due to display differences, please understand.