At this time, we offer three different aluminum alloys for Type II and Type III sulfuric anodizing: 5052 Aluminum: .063-.500″ (1.6 – 12.7mm) 6061 Aluminum: .063-.500″ (1.6 – 12.7mm) 7075 Aluminum: .125-.250″ (3.18 – 6.35mm)