This is a set of Ultimate Ears UE18+Pro custom IEMs and a standard QDC cable. There is a crack specific to the QDC connector. I purchased these used, but there are no issues with the sound. I used them to reset my ears with their flat sound signature. These are custom IEMs, so please consider purchasing them with the intention of reshelling. If you want to use them like universals, SpinFit CP155 or DIVINUS WIDE BORE series eartips can be used.