We will send you a new, unused item. [Reason for being "訳あり" (reason for discount/flaw)] As you can see in the photos, the plating on the round part is slightly peeled and there are some burrs. There are no functional issues. Please only consider this if you don't mind the peeling or burrs when you bite down. m(_ _)m This is a mouthpiece trainer for brass instrument players to train their embouchure. It helps prevent embouchure collapse and is expected to strengthen the muscles that support high notes. By using it in conjunction with instrument practice, it is expected to expand the range and improve endurance for brass instruments such as trumpets. ◎ You can feel the load on your depressor anguli oris muscles, and you may feel the same effect as long tones. However, it puts a strain on the muscles around your mouth, so please use it at your own pace without overexerting yourself. ^^ If you use it before playing, you'll get quite tired lol Personally, I recommend using it during your free time ( *´`*) For maintenance, as it is made of stainless steel, we recommend wiping it with a soft cloth dampened with water! Please do not use silver polish or lacquer. *Please note that this is not a Warburton P.E.T.E. model.