cool tube ,cool tube reflector ,air cool reflector,hydroponics Size :125x495mm Size :150x495mm Tempered glass Base: E40 cool tube for HPS sodium lampMaterial : tempered glassSize : Dia .125mm x L495mmDia .150mm x L495mmBase : E40Package : Dia:125mm x L 495mm (460x320x535mm, 6pcs/ctn)Dia:150mm x L 495mm (555x360x530mm, 6pcs/ctn) grown house use 125mm Cool tube ,glass tube