Product Name: Skull Steel Pendant, Amulet Pendant, Men's Pendant Necklace, Men's Jewelry, Women's Necklace, Gold and Silver Color material 316 steel, also known as marine grade stainless steel, is an alloy of chromium, nickel, molybdenum steel that has relatively good strength 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 body modification piercings and implants.Hand polished and bright Measure 12 mm x 20 mm