Nokin Solar Road Stud For Sale NK-RS-D1. LED Color: White, Yellow, Blue, Red, Green. Size: L104*W104*H20mm. Yellow Flashing Aluminum Raised Solar Cat Eyes Road Stud On Road NK-RS-A6. Body material: Hi-pressure Casting Aluminium alloy. Power supply: Solar panel (Monocrystalline 2.5V /0.2W) Battery: NI-MH1.2V/800MAH.