Product code: A-571 Features and specifications All rings are beautifully sculpted and are well designed material 316 steel, also known as stainless steel for marine use, is a chrome, nickel, molybdenum alloy of steel that has relatively good resistance and corrosion resistance. 316L is the low-carbon version of 316 stainless steel. 316L surgical steel is a common choice for biomedical implants, as well as for piercings and body modification implants. Hand polished and shiny Measure Not adjustable From 7 to 14, for details, consult the size chart