All plates are available in silver or gold, with your choice of Block or Script style font. The heart plate comes in two sizes, the large one measures 2-1/2" x 2-1/4" and the smaller one measures 2" x 1-3/4". The bone plate measures 3"W x 1-3/8"H. The plates have a self-adhesive strip on the back so you just peel and stick. Plexi-brass is two layers of a plastic type material, which resemble brass. The engraving machine cuts through the first layer, exposing the black layer beneath it. This is preferable to many people, as the black print shows clearly against the gold or silver plate, unlike a brass plate where the engraving would be the same color. It is also ideal for outdoor use, as it will not tarnish or fade, and again, you can clearly see the print. Great for use on outdoor headstones, indoor urns, scrapbooks, shadowboxes, frames, etc. Typically, the engraving consists of your pet's name, date of birth and date of death. Please try to limit the text to name and dates, and maybe one more word, such as "Beloved", or "Forever Loved". The plates are not designed to hold large amounts of text. Email me if you would like something else engraved or if you have any questions. PLEASE ALLOW 5-7 BUSINESS DAYS FOR ENGRAVING.