Embedded Solar Road Studs SRS01100B. ITEM NO.: SRS01100B Embedded solar road studs / Embedded solar road markers Size: Dia.100mm, Height: 20mm 1. Special reflector design,1, 2 directions 2. High quality Li-on battery, longer life, over 8 years 3. Perfect water proof, IP 68 4. Can stand snow plough, only NOKINm over the road surface