Aluminum good road stud reflectors With Anchors 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.