A2ZPlusmore Iron Man Arc Reactor Pendant Necklace Silver Plated AMZN1 Stylish fashion Necklace Iron Man Arc Reactor. Our pendants are made with an archival high quality image which is protected with a crystal clear 3D EPOXY DOME that beautifully enhances the artwork. Easy to wear on/off Material: Alloy Necklace Length: 24 inches Pendant Inner Diameter: 1 inch