from a vintage smith-corona clipper. I found the typewriter at Goodwill-I've been looking for one for a long time but they've always been too expensive-I've tried making the bracelet with only one key out of fear of ruining it- this one I backed with a metal gear using jeweler's glue. Then just jump rings, washers and gears and a lobster-claw clasp. Sorry my pictures are not that great!