1.aluminum heat radiator,LED heat sink. 2.IP65 anti-water grade,6063 aluminum alloy,cooling,saving energy 3.pass Rohs. Item:aluminum heat radiatorDescription:Aluminum ally profile,T3-T8,flat aluminum profileSurface treatment:CNC,anodized,brushing,millingSpecial heat dissipator for led light,especial LED street light,good performance in heat dispersion,anti-proof water,IP65 grade.