Key is stamped with the word STRENGTH. It’s almost two inches long, standard key size, and has a small hole at the far end if you felt crafty and wanted to convert it to this company’s “endless choker” style necklace (you would need a different chain in that case but it would be a great look—almost makes me want to keep it!). Black ball chain is approx. 28” long (shown doubled up). I love this company and collect their pieces but have too many! It’s time to send this one on to a new home. Feel free to ask questions and thanks for looking!