This is a vintage silver puffy key & heart padlock charm; the key measures 7/8" with the bail by 1/2" wide and 1/8" thick. The heart padlock measures 5/8" long with the bail ring by 1/2" wide by a little more than 1/8" thick. Both of the charms have tested as sterling silver and they both have tiny air holes to prevent them from collapsing when made. Together they hang 1 1/8" in length or you can have them attach together shown in the last picture. I can adjust them either way so just let me know at the time of your purchase.
Thank you for looking!