Be sure to add me to your favorites list Casio Keyboard Replacement Part, Mid-Sized "E" White Key for Many MT Models, the CZ 101, and Other Casios This is a half-sized Casio white E note key from an 1980's vintage Casio keyboard. These were used on many of the "MT" models, the CZ-101 synthesizer, and other Casio models with mid-sized / half-sized keys. These are NOT full sized keys, but the smaller sized keys that are half the size of full sized keys (they've also made micro sized keys too, and these are larger than those). I have several of them and they will replace broken "E" keys on many Casio models. Check your keyboard first to see if it takes this type, and you can ask and I might be able to help with that as well. This one is in very good condition, and I have several of them available. You can get one or more of these to replace broken keys on your Casio keyboard. I also have some other notes available if you needed them, feel free to message me. Thanks for looking! Check out my Store!