cast aluminum solar pavement markers Pavement Levelled Stud 40T Compression solar road stud il300 with 6 screws - rctraffic.com 8mm 6pcs (3 each lane) super luminous (minimum of 50.000 working hours) LED colors: Yellow, White, Red, Green, Blue. Life span: 3-5years for Lithium battery. Resistance: Above 40T (static) Size: φ150*50mm; Weight: 1260g.