Specifications of Metal Keychain for gift: 1.All the key chains shown here are made by die struck brass or iron; photo etched or printed methods.2.Colors can be filled with hard enamel; imitation hard enamel or soft enamel.3.Designs with no color filled are also streamline products.4.Double sides with logos are available.5.Finishing can be bright/ matte and antique as your request.6.Custom designs welcomed only.