Stainess steel S hook Material: aluminum Thickness:4mm,5mm,6mm,7mm,8mm,9mm,10mm Color: assorted Anodic Oxidation Stainess steel S hookWe do have some other similar items as following photos show, If you are interested in any of them, or need to know more details, please look through their webpages too.1,material of this kind of hookGrade3.6,4.6,4.8,5.6,6.8,8.8,9.8,10.9,12.9,etcCarbon steelGr.B,Gr ...