... Aluminum alloyWarranty: 3 yearsDetail display:Product features:1.LED corn light have difference color choice from 2700 to 6500K.2 ... size choice according to applications place. 3..LED corn light has more energy saving compared the CRL,Website ... other pollution.Light Distribution Curve:Package Pictures:LED corn light applications:Apply to factory, warehouse, workshop, large supermarkets ,museum, ...