Rohs Solar Road Stud With Anchors-Nokin Motorway Road Studs. High Strength Glass Solar Road Studs-Nokin Road Studs Jul 21, 2021 · High strength glass shell is adopted for the glass solar road stud, which has excellent compressive strength and scratch resistance.With a high brightness LED, the warning light of glass solar road stud can be seen 800 meters away to remind the driver of the road ahead.