316LVM surgical steel and PVD metal alloy N/A Through tunnels or as regular earrings Sold in pairs. The Batwing + Chains Tunnel Hangers are high quality earrings great for daywear or a night out! These tunnel hangers have a hinged clasp so you can comfortably wear them in the ear or through a (hence the name). Just pop them in and go! These hangers are 316LVM surgical steel and blackline PVD metal alloy. We prefer this grade of surgical steel for our body jewelry because it goes through a process called low vacuum melting. This process removes nickel from the steel to make it hypoallergenic. Nickel is one of the most common causes of metal allergies. This process unfortunately cannot remove 100% of the nickel, however. As result, there's still a small chance those with severe allergies will react. The blackline PVD is a coating of titanium carbide deposited as vapour on the metal. The charm is a metal alloy, which is ideal for casting and makes them perfect for jewelry with fine details. Many people have sensitivities to these alloys and may react. Metal Alloys with a PVD coating can help negate this reaction, but they may still irritate those with the strongest sensitivities. To avoid turning green, metal alloy jewelry is recommended to be cleaned often and not worn in moist/sweaty places. Show us how you styled these Batwing + Chains Tunnel Hangers with #BodyModsFamous on Instagram. We LOVE to see you all wearing our jewelry out there in the real world. Follow BodyMods Canada on and for updates on new jewelry, product info, sales, and more.