This high quality stainless steel pendant keychain is a great way to share your favorite photo.. Details Design is printed on an aluminum insert. Once the aluminum disc is placed into the tray, we then coat over it with a strong, UV epoxy coating and let harden. This leaves a clear, glass like dome over the top that is both permanent and scratch resistant. This is not a printed paper insert! Tray inner diameter is 25mm If you have any questions regarding this or any item, please hit the “Ask a Question” button next to the price and I will get back to you in 24 hours or less. To send your photo you can add to a message through etsy system or email once purchased. A preview will be provided before product is made and shipped.