Aluminium Raised Pavement Marker Motorway Slip Road Studs NK-1004 Body material: Aluminium Filling: Epoxy+Quartz Lens Material: PMMA Colors: White, Red, Yellow, Green, Blue Size: 100*100*20+50mm MORE Internation Solar Road Stud Company NOKIN Solar Road Stud Factory Share Watch on 360 Degree Motorway Studs Light With Shank