Aluminum road stud is suitable to install in the middle of the road, the reflector will remind the driver to drive on his ways. Size: 100*100*20 mm /150*150*25 mm and etc. Reflector color: Red, White, Yellow, Blue, Green or Customized. Resist compression: ≧20 ton. Reflective distance: About 350m. Weight : About 200~700g. Service Life: 3~5 years.